EXHIBIT 4.20

THE SECURITY REPRESENTED BY THIS INSTRUMENT HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 NOR REGISTERED OR QUALIFIED UNDER ANY STATE SECURITIES LAWS, SUCH SECURITY MAY NOT BE OFFERED FOR SALE, SOLD, DELIVERED AFTER SALE, TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS QUALIFIED AND REGISTERED UNDER APPLICABLE STATE AND FEDERAL SECURITIES LAWS OR UNLESS SUCH QUALIFICATION AND REGISTRATION IS NOT REQUIRED.

SECURED

PROMISSORY NOTE

$6,500,000.00

New York, New York

January 18, 2018

FOR VALUE RECEIVED, 620 Dyer LLC, a California limited liability company, as maker, having its principal place of business at 1581 Franklin Avenue, Garden City, New York 11501 (“Borrower”), hereby unconditionally promises to pay to the order of RD Dyer LLC, a Delaware limited liability company, having an address at c/o RD Advisors, 341 West 38^th Street, Suite 800, New York, New York 10018 (together with its successors and/or assigns, “Lender”), or at such other place as the holder hereof may from time to time designate in writing, the principal sum of Six Million Five Hundred Thousand Dollars ($6,500,000.00) This Secured Promissory Note (this “Note”) is the note referred to in that certain Loan Agreement dated the date hereof between Borrower and Lender (as the same may be amended, modified, supplemented, replaced or otherwise modified from time to time, the “Loan Agreement”). Payments hereunder shall be made in lawful money of the United States of America, with interest thereon to be computed from the date of this Note at the Interest Rate (as defined in the Loan Agreement), and shall be paid in accordance with the terms of this Note and the Loan Agreement. Payments hereunder may be made by check or by federal wire transfer, but not in cash. All capitalized terms not defined herein shall have the respective meanings set forth in the Loan Agreement.

PAYMENT TERMS

Borrower agrees to pay the principal sum of this Note and interest on the unpaid principal sum of this Note and all other amounts due under the Loan Agreement and the other Loan Documents from time to time outstanding, at the rates and at the times specified in the Loan Agreement, and the outstanding balance of the principal sum of this Note and all accrued and unpaid interest thereon and all other amounts due under the Loan Agreement and the other Loan Documents shall be due and payable on the Maturity Date.

DEFAULT AND ACCELERATION

The Debt shall without notice become immediately due and payable at the option of Lender upon the happening of any Event of Default.

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LOAN DOCUMENTS

This Note is secured by the Deed of Trust and the other Loan Documents. All of the terms, covenants and conditions contained in the Loan Agreement, the Deed of Trust and the other Loan Documents are hereby made part of this Note to the same extent and with the same force as if they were fully set forth herein. In the event of a conflict or inconsistency between the terms of this Note and the Loan Agreement, the terms and provisions of the Loan Agreement shall govern.

SAVINGS CLAUSE

Notwithstanding anything to the contrary contained herein, (a) all agreements and communications between Borrower and Lender are hereby and shall automatically be limited so that, after taking into account all amounts deemed to constitute interest, the interest contracted for, charged or received by Lender shall never exceed the Maximum Legal Rate, (b) in calculating whether any interest exceeds the Maximum Legal Rate, all such interest shall be amortized, prorated, allocated and spread over the full amount and term of all principal indebtedness of Borrower to Lender, and (c) if through any contingency or event, Lender receives or is deemed to receive interest in excess of the Maximum Legal Rate, any such excess shall be deemed to have been applied toward the payment of the principal of any and all then outstanding indebtedness of Borrower to Lender, or if there is no such indebtedness, shall immediately be returned to Borrower.

NO ORAL CHANGE

This Note may not be modified, amended, waived, extended, changed, discharged or terminated orally or by any act or failure to act on the part of Borrower or Lender, but only by an agreement in writing signed by the party(ies) against whom enforcement of any modification, amendment, waiver, extension, change, discharge or termination is sought.

WAIVERS

(A) Borrower and all others who may become liable for the payment of all or any part of the Debt do hereby jointly and severally waive presentment and demand for payment, notice of dishonor, notice of intention to accelerate, notice of acceleration, protest and notice of protest and non-payment and all other notices of any kind. No release of any security for the Debt or extension of time for payment of this Note or any installment hereof, and no alteration, amendment or waiver of any provision of this Note, the Loan Agreement or the other Loan Documents made by agreement between Lender and any other Person shall release, modify, amend, waive, extend, change, discharge, terminate or affect the liability of Borrower or any other Person (other than the Person with whom Lender made the aforementioned agreement) who may become liable for the payment of all or any part of the Debt under this Note, the Loan Agreement or the other Loan Documents. No notice to or demand on Borrower shall be deemed to be a waiver of the obligation of Borrower or of the right of Lender to take further action without further notice or demand as provided for in this Note, the Loan Agreement or the other Loan Documents. If Borrower is a partnership or limited liability company, the agreements herein contained shall remain in force and be applicable, notwithstanding any changes in the individuals or entities comprising the partnership or limited liability company, and the term “Borrower,” as used herein, shall include any alternate or successor partnership or limited liability company, but any predecessor partnership or limited liability company and its partners or members shall not thereby be released from any liability. If Borrower is a corporation, the agreements contained herein shall remain in full force and be applicable, notwithstanding any changes in the shareholders comprising, or the officers and directors relating to, the corporation, and the term “Borrower,” as used herein, shall include any alternative or successor corporation, but any predecessor corporation shall not be relieved of liability hereunder. (Nothing in the foregoing two sentences shall be construed as a consent to, or a waiver of, any prohibition or restriction on transfers of interests in such partnership, limited liability company or corporation which may be set forth in the Loan Agreement, the Deed of Trust or any other Loan Document.)

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(B) To the extent applicable, Borrower hereby expressly (i) waives any right it may have under California Civil Code § 2954.10 to prepay this Note in whole or in part, without penalty, upon acceleration of the Maturity Date; and (ii) agrees that if a prepayment of any or all of this Note is made, following any acceleration of the Maturity Date by Lender on account of any transfer or disposition prohibited or restricted herein or by the Deed of Trust, Borrower shall be obligated to pay, concurrently therewith, the Liquidated Damages Amount, if any, that would be required under the Loan Agreement. By initialing this provision in the space provided below, Borrower hereby declares that Lender's agreement to make the subject Loan at the interest rate and for the term set forth herein constitutes adequate consideration, given individual weight by the undersigned, for this waiver and agreement.

(C) To the extent applicable, nothing herein shall be deemed to limit the right of Lender to recover, in accordance with California Code of Civil Procedure Section 736 (as such Section may be amended from time to time), any costs, expenses, liabilities or damages, including attorneys’ fees and costs, incurred by Lender and arising from any covenant, obligation, liability, representation or warranty contained in any environmental indemnity agreement given to Lender (including, without limitation, the environmental indemnity provisions of the Loan Agreement), or any order, consent decree or settlement relating to the cleanup of Hazardous Substances or any other “environmental provision” (as defined in such Section 736) relating to the Property or any portion thereof or the right of Lender to waive, in accordance with California Code of Civil Procedure Section 726.5 (as such Section may be amended from time to time), the security of the Deed of Trust as to any parcel of the Property that is “environmentally impaired” or is an “affected parcel” (as such terms are defined in such Section 726.5), and as to any personal property attached to such parcel, and thereafter to exercise against Borrower, to the extent permitted by such Section 726.5, the rights and remedies of any unsecured creditor, including reduction of Lender’s claim against Borrower to judgment, and any other rights and remedies permitted by law.

BORROWER’S INITIALS AS TO WAIVERS ABOVE: ____________

TRANSFER

Upon the transfer of this Note by Lender, Borrower hereby waiving notice of any such transfer, Lender may deliver all the collateral mortgaged, granted, pledged or assigned pursuant to the Loan Documents, or any part thereof, to the transferee who shall thereupon become vested with all the rights herein or under applicable law given to Lender with respect thereto, and Lender shall thereafter forever be relieved and fully discharged from any liability or responsibility in the matter; but Lender shall retain all rights hereby given to it with respect to any liabilities and the collateral not so transferred.

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GOVERNING LAW; JURISDICTION; SERVICE OF PROCESS

THIS NOTE WAS NEGOTIATED IN THE STATE OF NEW YORK, AND MADE BY BORROWER AND ACCEPTED BY LENDER IN THE STATE OF NEW YORK, AND THE PROCEEDS OF THIS NOTE WERE DISBURSED FROM THE STATE OF NEW YORK, WHICH STATE THE PARTIES AGREE HAS A SUBSTANTIAL RELATIONSHIP TO THE PARTIES AND TO THE UNDERLYING TRANSACTION EMBODIED HEREBY, AND IN ALL RESPECTS, INCLUDING, WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE, THIS NOTE AND THE OBLIGATIONS ARISING HEREUNDER SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO CONTRACTS MADE AND PERFORMED IN SUCH STATE (WITHOUT REGARD TO PRINCIPLES OF CONFLICT OF LAWS) AND ANY APPLICABLE LAW OF THE UNITED STATES OF AMERICA. TO THE FULLEST EXTENT PERMITTED BY LAW, BORROWER HEREBY UNCONDITIONALLY AND IRREVOCABLY WAIVES ANY CLAIM TO ASSERT THAT THE LAW OF ANY OTHER JURISDICTION GOVERNS THIS NOTE AND THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK PURSUANT TO SECTION 5-1401 OF THE NEW YORK GENERAL OBLIGATIONS LAW.

ANY LEGAL SUIT, ACTION OR PROCEEDING AGAINST LENDER OR BORROWER ARISING OUT OF OR RELATING TO THIS NOTE MAY AT LENDER’S OPTION BE INSTITUTED IN ANY FEDERAL OR STATE COURT IN THE CITY OF NEW YORK, COUNTY OF NEW YORK, PURSUANT TO SECTION 5-1402 OF THE NEW YORK GENERAL OBLIGATIONS LAW, AND BORROWER WAIVES ANY OBJECTIONS WHICH IT MAY NOW OR HEREAFTER HAVE BASED ON VENUE AND/OR FORUM NON CONVENIENS OF ANY SUCH SUIT, ACTION OR PROCEEDING, AND BORROWER HEREBY IRREVOCABLY SUBMITS TO THE EXCLUSIVE JURISDICTION OF ANY SUCH COURT IN ANY SUIT, ACTION OR PROCEEDING. BORROWER DOES HEREBY DESIGNATE AND APPOINT:

Paracorp Incorporated

One Commerce Plaza

99 Washington Avenue, #805A

Albany, NY 12210-2822

AS ITS AUTHORIZED AGENT TO ACCEPT AND ACKNOWLEDGE ON ITS BEHALF SERVICE OF ANY AND ALL PROCESS WHICH MAY BE SERVED IN ANY SUCH SUIT, ACTION OR PROCEEDING IN ANY FEDERAL OR STATE COURT IN NEW YORK, NEW YORK, AND BORROWER AGREES THAT SERVICE OF PROCESS UPON SAID AGENT AT SAID ADDRESS AND WRITTEN NOTICE OF SAID SERVICE MAILED OR DELIVERED TO BORROWER IN THE MANNER PROVIDED HEREIN SHALL BE DEEMED IN EVERY RESPECT EFFECTIVE SERVICE OF PROCESS UPON BORROWER IN ANY SUCH SUIT, ACTION OR PROCEEDING IN THE STATE OF NEW YORK. BORROWER (I) SHALL GIVE PROMPT NOTICE TO LENDER OF ANY CHANGED ADDRESS OF ITS AUTHORIZED AGENT HEREUNDER, (II) MAY AT ANY TIME AND FROM TIME TO TIME DESIGNATE A SUBSTITUTE AUTHORIZED AGENT WITH AN OFFICE IN NEW YORK, NEW YORK (WHICH SUBSTITUTE AGENT AND OFFICE SHALL BE DESIGNATED AS THE PERSON AND ADDRESS FOR SERVICE OF PROCESS), AND (III) SHALL PROMPTLY DESIGNATE SUCH A SUBSTITUTE IF ITS AUTHORIZED AGENT CEASES TO HAVE AN OFFICE IN NEW YORK, NEW YORK OR IS DISSOLVED WITHOUT LEAVING A SUCCESSOR. NOTHING CONTAINED HEREIN SHALL AFFECT THE RIGHT OF LENDER TO SERVE PROCESS IN ANY OTHER MANNER PERMITTED BY LAW OR TO COMMENCE LEGAL PROCEEDINGS OR OTHERWISE PROCEED AGAINST BORROWER IN ANY OTHER JURISDICTION.

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WAIVER OF JURY TRIAL

BORROWER HEREBY AGREES NOT TO ELECT A TRIAL BY JURY OF ANY ISSUE TRIABLE OF RIGHT BY JURY, AND FOREVER WAIVES ANY RIGHT TO TRIAL BY JURY FULLY TO THE EXTENT THAT ANY SUCH RIGHT SHALL NOW OR HEREAFTER EXIST, WITH REGARD TO THIS NOTE, THE DEED OF TRUST OR THE OTHER LOAN DOCUMENTS, OR ANY CLAIM, COUNTERCLAIM OR OTHER ACTION ARISING IN CONNECTION THEREWITH. THIS WAIVER OF RIGHT TO TRIAL BY JURY IS GIVEN KNOWINGLY AND VOLUNTARILY BY BORROWER AND IS INTENDED TO ENCOMPASS INDIVIDUALLY EACH INSTANCE AND EACH ISSUE AS TO WHICH THE RIGHT TO A TRIAL BY JURY WOULD OTHERWISE ACCRUE. LENDER IS HEREBY AUTHORIZED TO FILE A COPY OF THIS PARAGRAPH IN ANY PROCEEDING AS CONCLUSIVE EVIDENCE OF THIS WAIVER BY BORROWER.

SUCCESSORS AND ASSIGNS

This Note shall be binding upon, and shall inure to the benefit of, Borrower and Lender and their respective successors and permitted assigns. Lender shall have the right to assign or transfer its rights under this Note in connection with any assignment of the Loan and the Loan Documents. Any assignee or transferee of Lender shall be entitled to all the benefits afforded to Lender under this Note. Borrower shall not have the right to assign or transfer its rights or obligations under this Note without the prior written consent of Lender, as provided in the Loan Agreement, and any attempted assignment without such consent shall be null and void.

NOTICES

All notices or other written communications hereunder shall be delivered in accordance with Section 9.5 of the Loan Agreement.

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THE SECURITY REPRESENTED BY THIS INSTRUMENT HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 NOR REGISTERED OR QUALIFIED UNDER ANY STATE SECURITIES LAWS, SUCH SECURITY MAY NOT BE OFFERED FOR SALE, SOLD, DELIVERED AFTER SALE, TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS QUALIFIED AND REGISTERED UNDER APPLICABLE STATE AND FEDERAL SECURITIES LAWS OR UNLESS SUCH QUALIFICATION AND REGISTRATION IS NOT REQUIRED.

IN WITNESS WHEREOF, Borrower has duly executed this Note as of the day and year first above written.

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