system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
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EXHIBIT 10.1 STRATEGIC SALES & MARKETING AGREEMENT THIS STRATEGIC SALES & MARKETING AGREEMENT (the "Agreement") is effective as of the last date provided for on the signature page and is entered into by and between SightLife Surgical, Inc., a Delaware corporation, having its principal place of business at 1200 6th Ave, Ste. 300, Seattle, WA 98101 ("Surgical") and Imprimis Pharmaceuticals, Inc., a Delaware corporation, and its subsidiaries, having its principal place of business at 12264 El Camino Real, Suite 350, San Diego, CA 92130 ("Imprimis"). WHEREAS, Imprimis and/or its subsidiary companies are licensed and accredited pharmacies and/or outsourcing facilities; WHEREAS, Surgical is a cornea-focused organization that provides comprehensive services to support ophthalmic surgeons; and WHEREAS, Imprimis wishes to engage Surgical and its employees to provide contract sales services under the terms and conditions as set forth below. NOW THEREFORE, in consideration of the mutual promises contained herein and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Surgical and Imprimis agree, intending to be legally bound, as follows: 1. Sales Representation Services. 1.1. Surgical will provide sales representation services to Imprimis during the Term of this Agreement (Surgical and its sales representatives may be referred to collectively hereinafter as Surgical). The sales representation services ("Services") are set forth in the Statement of Work ("SOW") that is attached hereto as Appendix A and made a part hereof, as it may be amended from time to time by the parties hereto. 1.2. Surgical represents and warrants to Imprimis that: (a) Surgical has the required skill, experience and qualifications to perform the Services, shall perform the Services in a professional and workmanlike manner in accordance with generally recognized industry standards for similar services and shall devote sufficient resources to ensure that the Services are performed in a timely and reliable manner; and (b) Surgical shall perform the Services in compliance with all applicable federal, state and local laws and regulations. 2. Effective Date; Term and Termination. 2.1. This Agreement shall be effective on the later of the dates that it is executed by Imprimis and Surgical (the "Effective Date") and shall terminate pursuant to the terms of the SOW (the "Term"). 2.2. Surgical shall immediately cease to provide any further Services under this Agreement and/or any applicable SOW upon receipt of notice from Imprimis that Imprimis is terminating this Agreement and/or such SOW. Upon termination of this Agreement and/or such SOW, Surgical shall be entitled to payment for Services completed prior to such termination. Thereafter, Imprimis shall owe Surgical no further amounts or obligations in law or equity. Page 1 of 11 3. Sales Commissions. In consideration of the Services provided hereunder, Imprimis shall pay Surgical sales commissions ("Sales Commissions") as set forth in the SOW. Surgical shall be responsible for all expenses incurred in association with performance of the Services. 4. Sales Commission Payment. Within sixty (60) days after the end of each calendar quarter during the Term, Imprimis shall deliver to Surgical a report setting forth for such calendar quarter the calculation of the applicable Sales Commission due under this Agreement for the sale of the Product (as defined in the SOW). Imprimis shall remit the total Sales Commission payments due for the sale of Product during such calendar quarter at the time such report is made. 5. Ownership of Intellectual Property / Inventions / Work Product. Surgical agrees that it shall disclose promptly to Imprimis all inventions, ideas, concepts, and discoveries, including but not limited to processes, methods, formulas, biological materials, specimens, chemical compounds, formulations, software, data, techniques, products, applications, systems, procedures, technical information, drawings, reports and designs as well as improvements and modifications thereof and know-how thereto (whether or not protectable by copyright, patent, trademark, trade secret or any other proprietary rights), that it makes, conceives of, discovers or develops as a result of the receipt of Confidential Information (as defined in the Confidentiality Agreement referenced in Section 6 below) ("Work Product"). Surgical agrees that all Work Product shall be the sole and exclusive property of Imprimis. 5.1. Surgical represents and warrants that all Work Product is and shall be Surgical's original work (except for material in the public domain or provided by Imprimis) and, to the best of Surgical's knowledge, does not and will not violate or infringe upon the intellectual property right or any other right whatsoever of any person, firm, corporation or other entity. 5.2. Surgical agrees that any Work Product, if subject to copyright, shall be considered a "work made
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Extract the exact clause related to "Effective Date" from the excerpt above.

assistant: This Agreement shall be effective on the later of the dates that it is executed by Imprimis and Surgical (the "Effective Date") and shall terminate pursuant to the terms of the SOW (the "Term").