Payment of Principal. The principal amount of this Note shall be paid to the Holder on or prior to the Maturity Date. The Company and the Holder have agreed that the principal amount of US$730,000 (United States Dollar: Seven Hundred Thirty Thousand Dollars) is equivalent to SGD$1,000,000 (Singapore Dollar: One Million Dollars) and that the Company shall repay the principal amount of this Note in Singapore Dollars which is fixed at SGD$1,000,000.

Principal. The entire unpaid principal balance of this Note shall be payable on the earlier of: # March 31, 2021, and # the date on which Maker consummates an initial public offering of its securities (such earlier date, the “Maturity Date”). The principal balance may be prepaid at any time by Maker, at its election and without penalty. Under no circumstances shall any individual, including but not limited to any officer, director, employee or stockholder of the Maker, be obligated personally for any obligations or liabilities of the Maker hereunder.

Term Loan – Payment of Principal and Interest. The unpaid principal amount of the Term Loans shall, subject to the following sentence and [Section 2.7(g)], bear interest at the applicable Interest Rate. If at any time such rate of interest would exceed the Maximum Rate but for the provisions thereof limiting interest to the Maximum Rate, then any subsequent reduction shall not reduce the rate of interest on the Term Loans below the Maximum Rate until the aggregate amount of interest accrued on the Term Loans equals the aggregate amount of interest which would have accrued on the Term Loans if the interest rate had not been limited by the Maximum Rate. All accrued but unpaid interest on the principal balance of the Term Loans shall be payable on each Payment Date and on the Maturity Date, provided that interest accruing at the Default Interest Rate pursuant to [Section 2.7(g)] shall be payable on

Interest or Principal. Failure by the Borrowers to pay # when due and payable, all or any portion of the principal of Obligations (other than with respect to Bank Product Obligations) owing to Agent or any Lender under this Agreement and the other Loan Documents or # within three (3) Business Days after the same shall become due and payable, all or any portion of any other Obligations;

Acting as Principal. [[Organization C:Organization]] will engage in such Transactions as principal (or, if agreed in writing in advance of any Transaction by the other party hereto, as agent for a disclosed principal).

Principal Trade Names. The Company shall not Dispose of any Principal Trade Name.

The Research Project shall be supervised and coordinated by Professor […​…] of NTU (hereinafter referred to as the “NTU Principal Investigator” or “NTU PI”), and […​…] for the Company (hereinafter referred to as the “Company Principal Investigator” or “Company PI”).

Principal Market Regulation. Notwithstanding any other provision of this Note, the Company shall not issue any shares of Common Stock upon conversion of this Note if the issuance of such shares of Common Stock would exceed the aggregate number of shares of Common Stock which the Company may issue upon conversion without breaching the Company’s obligations under the rules or regulations of the Nasdaq Capital Market, except that such limitation shall not apply in the event that the Company: # obtains the approval of its stockholders as required by the applicable rules of the Nasdaq Capital Market for issuances of shares of Common Stock in excess of such amount, or # obtains a written opinion from outside counsel to the Company that such approval is not required, which opinion is reasonably satisfactory to the Holder.

Payment. Except to the extent provided to the contrary in [Section 2.10], [Section 2.11(k)] or [Section 2.12(a), (i)])] all interest and all other fees payable hereunder or under any of the other Loan Documents (other than Letter of Credit Fees) shall be due and payable, in arrears, on the first day of each month, # all Letter of Credit Fees payable hereunder, and all fronting fees and all commissions, other fees, charges and expenses provided for in [Section 2.11(k)] shall be due and payable, in arrears, on the first Business Day of each month, and # all costs and expenses payable hereunder or under any of the other Loan Documents, and all other Lender Group Expenses shall be due and payable on the earlier of # the first day of the month following the date on which the applicable costs, expenses, or Lender Group Expenses were first incurred, or # the date on which demand therefor is made by Agent, in each case, provided that Agent shall endeavor, so long as no Default or Event of Default shall have occurred and be continuing, to provide a reasonably detailed invoice thereof to Borrowers prior to such payment date (it being acknowledged and agreed that any charging of such costs, expenses or Lender Group Expenses to the Loan Account pursuant to the provisions of the following sentence shall be deemed to constitute a demand for payment thereof for the purposes of subclause (y)). Borrowers hereby authorize

Payment. No Obligor will directly or indirectly pay or cause to be paid any remuneration, whether by way of supplemental or additional interest, fee or otherwise, or grant any security or provide other credit support, to any Purchaser or holder of a Note as consideration for or as an inducement to the entering into by such Purchaser or holder of any waiver or amendment of any of the terms and provisions hereof or of any Subsidiary Guaranty or any Note unless such remuneration is concurrently paid, or security is concurrently granted or other credit support concurrently provided, on the same terms, ratably to each Purchaser and holder of a Note even if such Purchaser or holder did not consent to such waiver or amendment.