Authorization; Enforcement. This Agreement has been duly and validly authorized by the Buyer and has been duly executed and delivered on behalf of the Buyer, and this Agreement constitutes a valid

Authorization; Enforcement. (i) The Company has all requisite corporate power and authority to enter into and perform this Agreement, the Note, and to consummate the transactions contemplated hereby and thereby and to issue the Securities, in accordance with the terms hereof and thereof, # the execution and delivery of this Agreement, the Warrant, the Note, and the Conversion Shares by the Company and the consummation by it of the transactions contemplated hereby and thereby (including without limitation, the issuance of the Note, Warrant, as well as the issuance and reservation for issuance of the Conversion Shares issuable upon conversion of the Note and/or exercise of the Warrant) have been duly authorized by the Company’s Board of Directors and no further consent or authorization of the Company, its Board of Directors, its shareholders, or its debt holders is required, # this Agreement and the Note (together with any other instruments executed in connection herewith or therewith) have been duly executed and delivered by the Company by its authorized representative, and such authorized representative is the true and official representative with authority to sign this Agreement, the Note and the other instruments documents executed in connection herewith or therewith and bind the Company accordingly, and # this Agreement constitutes, and upon execution and delivery by the Company of the Note, each of such instruments will constitute, a legal, valid and binding obligation of the Company, enforceable against the Company in accordance with their terms.

Validity; Enforcement. This Agreement has been duly and validly authorized, executed and delivered on behalf of ​ and is a valid and binding agreement of ​ enforceable against ​ in accordance with its terms, subject as to enforceability to general principles of equity and to applicable bankruptcy, insolvency, reorganization, moratorium, liquidation and other similar laws relating to, or affecting generally, the enforcement of applicable creditors' rights and remedies. The execution and delivery of the Transaction Documents by ​ and the consummation by it of the transactions contemplated hereby do not conflict with ​’s certificate of organization or operating agreement or similar documents, and do not require further consent or authorization by ​, its managers or its members.

Enforcement Costs. If an attorney is retained to represent ​ for failure by ​ to deliver any Shares within two (2) Business Days as required under this Agreement, then ​ shall pay to ​, as incurred by ​, all reasonable costs and expenses including reasonable attorneys’ fees incurred in connection therewith, in addition to all other amounts due hereunder.

Cost of Tenant Improvements. The cost of the design, construction and installation of the Tenant Improvements shall be borne as follows:

Preliminary Total Development Cost Estimate. Based upon the ​’s Work described in [Schedule 1] and the ​ Improvement Allowance (defined below) for the ​ Improvements, ​ has prepared an estimate of the Total Development Costs (as defined in Exhibit J) for the Premises (the “Preliminary Total Development Cost Estimate”), which is set forth on [Schedule 3] attached hereto and includes detailed hard and soft cost budgets for the ​’s Work and the ​ Improvement Allowance.

Cost of Tenant’s ES Fitout. Except for the ES Allowance (hereinafter defined), all of Tenant’s ES Fitout shall be performed at Tenant’s sole cost and expense, and shall be performed in accordance with the provisions of the Lease (including, without limitation, [Article 11]). Tenant shall pay to Landlord, as additional rent, within ten (10) days after demand therefor, any costs or expenses incurred by Landlord (which shall be reasonably based on Tenant's usage) for the use of elevators and/or hoisting in connection with the performance of Tenant’s ES Fitout.

Technology Transfer Fee and Cost. Denali shall pay to ​ within fifteen (15) days following receipt of an invoice and notice of the completion of the Technology Transfer Plan from ​, a one-time payment of one million five hundred thousand dollars (U.S. $1,500,000).

Authorization; Enforcement; Validity. The Company has the requisite power and authority to enter into and perform its obligations under this Agreement and the other Transaction Documents and to issue the Securities in accordance with the terms hereof and thereof. The execution and delivery of this Agreement and the other Transaction Documents by the Company and the consummation by the Company of the transactions contemplated hereby and thereby (including, without limitation, the issuance of the Common Shares) have been duly authorized by the Company’s board of directors and (other than the filing with the SEC of the prospectus supplement required by the Registration Statement pursuant to Rule 424(b) under the 1933 Act (the “Prospectus Supplement”) supplementing the base prospectus forming part of the Registration Statement (the “Prospectus”) and any other filings as may be required by any state securities agencies) no further filing, consent or authorization is required by the Company, its board of directors or its stockholders or other governing body. This Agreement has been, and the other Transaction Documents will be prior to the Closing, duly executed and delivered by the Company, and each constitutes the legal, valid and binding obligations of the Company, enforceable against the Company in accordance with its respective terms, except as such enforceability may be limited by general principles of equity or applicable bankruptcy, insolvency, reorganization, moratorium, liquidation or similar laws relating to, or affecting generally, the enforcement of applicable creditors’ rights and remedies and except as rights to indemnification and to contribution may be limited by federal or state securities law. “Transaction Documents” means, collectively, this Agreement, the Common Shares, the Irrevocable Transfer Agent Instructions (as defined below) and each of the other agreements and instruments entered into or delivered by any of the parties hereto in connection with the transactions contemplated hereby and thereby, as may be amended from time to time.

Authorization; Validity; Enforcement. Each of the Transaction Documents has been duly authorized, executed and delivered by the Parent and the Company, and is a valid and binding agreement of the Parent and the Company, enforceable against the Parent and the Company in accordance with its terms, except as the enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting the rights and remedies of creditors or by general equitable principles. The Certificate of Designations when entered into by the Parent and the Company, will become effective under the Delaware Revised Uniform Partnership Act and will comply with all applicable requirements thereunder on or prior to the Initial Closing Date.