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:
"""
ENDORSEMENT AGREEMENT THIS ENDORSEMENT AGREEMENT (the "Agreement") is dated as of this 14th day of November 2017 ("Effective Date"), by and between Eco Science Solutions, Inc. ("ESSI"), a Nevada corporation, and Stephen Marley ("Talent"), an individual. AGREEMENT 1. Engagement. ESSI engages Talent and Talent hereby accepts the engagement to act as a Spokesperson for ESSI, and to provide his endorsement of all ESSI products and services, domestically and worldwide. 2. Term of Agreement. The term of this Agreement shall be for one (1) year commencing on the Effective Date and automatically renewing annually thereafter, unless either party provides a thirty-day notice of written termination one to the other ("Term"). 3. Grant. During the Term and subject to the limitations set forth in Paragraphs 9 and 10, ESSI shall have the right to use the name, image, likeness, characterization, visual and audio representation of Talent ("Talent Attributes") in connection with the ESSI product suite, in the venue(s) as follows: A. Promotional Territories ("Territories") shall include various online, outdoor, radio and television promotional spots (specific promotional spots and content specifics to be mutually agreed upon) promoting the ESSI product suite ("Commercial Placements") aired in various venues as determined to best suit the needed promotion of ESSI products; B. On ESSI's downloaded apps (UseHerbo, Herbo Wallet, FitRx) and websites (www.useherbo.com; www.eccossi.com) ("Websites"), of which new ESSI owns and operates downloadable apps and websites may be added to this list at the will of ESSI; and C. ESSI Natural Supplementation Products. D. In ESSI product-related press releases (of which only ESSI may produce and publish). In connection with any ESSI's usage of Talent Attributes as outlined above in Paragraphs 3(A)-(D) that are applicable to Dietary Supplements, ESSI will feature the following disclaimer in close proximity to said usage: "STEPHEN MARLEY IS NOT A MEDICAL AUTHORITY. THESE STATEMENTS HAVE NOT BEEN EVALUATED BY THE FOOD AND DRUG ADMINISTRATION. THIS PRODUCT IS NOT INTENDED TO DIAGNOSE, TREAT, CURE OR PREVENT ANY DISEASE." 1 Source: ECO SCIENCE SOLUTIONS, INC., 8-K, 11/17/2017 4. Duties of Talent and Rights of ESSI. During the Term and subject to the limitations set forth in Paragraphs 9 and 10, Talent agrees to provide ESSI with the following: A. Upon request by ESSI, two (2) production sessions to be used for the production of the various medias to be used in Commercial placements ("Production Sessions"); the location, date and time of the Production Sessions shall be mutually agreed upon by Talent and ESSI. In the event any Production Session exceeds eight (8) hours in duration ESSI and Talent will negotiate in good faith additional compensation to Talent for time in excess of eight (8) hours. B. Talent will serve as a Special Advisor to ESSI, whose sole responsibility is to be listed as a brand ambassador on the Websites and/or ESSI related press releases. With respect to Talent's position as Special Advisory, Talent will not be responsible for any additional services such as attending meetings, corporate functions, etc. C. ESSI may request an additional production session(s), or a media tour or personal appearance(s) of Talent for an additional fee to be mutually agreed upon by the parties. 5. Consideration. As consideration for Talent's services under this Agreement, ESSI agrees as follows: A. Equity Payment: ESSI will provide Talent with one-million (1,000,000) shares of restricted common stock issued within ten business days of execution of this Agreement. B. Cash Payments: (1) ESSI will provide monthly payment of Ten Thousand and NO/100 Dollars ($10,000) made payable to Talent for Talent's social communications with its followers on popular social media venues, including, but not limited to, Facebook, Instagram, Twitter and Snap Chat where Talent may communicate about the ESSI product suite ("Social Communication"). The monthly Social Communication schedule will be mutually agreed upon by Talent and ESSI one month in advance of the actual month of communications. Once the monthly Social Communication schedule is set, the volume of Posts, Tweets and Snaps will determine the total amount of monthly compensation available to Talent. ESSI's Social Media Manager will keep track of Talent's activity pursuant to ESSI's Company quarter to determine the amount of Cash Payment due for the quarter. (a) Payments shall be made to Talent in the following manner, and to the following address: 6. Expenses. If applicable, ESSI agrees to provide and pay for the expenses related to Talent's services provided in Paragraph 4, which shall include but not be limited to the following: A. First-class airfare, first-class ground transportation, hotel accommodations, and meals
"""

Extract the exact clause related to "Effective Date" from the excerpt above.

assistant: 14th day of November 2017