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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independent contractors, without the authority to act on behalf of or bind each other. Nothing in this Agreement shall be construed as establishing a partnership or joint venture relationship between the Parties hereto. No Party shall have the right to enter into any agreements on behalf of the other Party, nor shall it represent to any person that it has such right or authority. All persons employed by a Party shall be employees of such Party and not of the other Party and all costs and obligations incurred by reason of any such employment shall be for the account and expense of such Party. 20 Source: ETON PHARMACEUTICALS, INC., 10-Q, 11/14/2019 CONFIDENTIAL 15.5 Entire Agreement; Amendment. This Agreement (and all Exhibits attached hereto) supersedes all prior discussions and agreements among the Parties with respect to the subject matter hereof and contains the sole and entire agreement among the Parties hereto with respect to the subject matter hereof. This Agreement may not be amended or modified except in writing executed by the duly authorized representatives of the Parties. 15.6 No Third-Party Beneficiaries. This Agreement is not intended to confer upon any Person other than the Parties hereto any rights or remedies hereunder. 15.7 Severability. Should any part or provision of this Agreement be held unenforceable or in conflict with Applicable Law, the invalid or unenforceable part or provision shall, provided that it does not affect the essence of this Agreement, be replaced with a revision which accomplishes, to the greatest extent possible, the original commercial purpose of such part or provision in a valid and enforceable manner, and the balance of this Agreement shall remain in full force and effect and binding upon the Parties hereto. 15.8 Assignment. The terms and provisions hereof shall inure to the benefit of, and be binding upon the Parties and their respective successors and permitted assigns. The Parties shall not assign, encumber or otherwise transfer this Agreement or any part of it to any Third Party, without the prior written consent of the other Party. Notwithstanding the foregoing, each Party may assign the rights and obligations under this Agreement in whole, without consent of the other Party, to a Third Party or Affiliate in connection with the transfer or sale of all or substantially all of its business or in the event of a merger, consolidation or change in control provided that the assignee assumes in writing and becomes directly obligated to the other Party to perform all of the obligations of assignor under this Agreement. 15.9 Waiver. No waiver of a breach or default hereunder shall be considered valid unless in writing and signed by the Party giving such waiver, and no such waiver shall be deemed a waiver of any subsequent breach or default of the same or similar nature. 15.10 Survival. Any provision which by its terms is intended to survive the termination or expiration of this Agreement will survive the termination or expiration of this Agreement and remain in full force and effect thereafter. 15.11 Counterparts; PDF. This Agreement may be executed in two (2) or more counterparts, each of which shall be deemed an original but all of which, taken together, shall constitute one and the same instrument. PDF and facsimile signatures shall constitute original signatures. The Parties agree that the electronic signatures appearing on this Agreement are the same as handwritten signatures for the purposes of validity, enforceability and admissibility pursuant to the Electronic Signatures in Global and National Commerce (ESIGN) Act of 2000, and Uniform Electronic Transactions Act (UETA) model law, or similar applicable laws. [SIGNATURE PAGE FOLLOWS] 21 Source: ETON PHARMACEUTICALS, INC., 10-Q, 11/14/2019 CONFIDENTIAL IN WITNESS WHEREOF, the Parties hereto have executed this Agreement as of the date first above written, to be effective upon the Effective Date. ETON PHARMACEUTICALS, INC. By: Name: Title: AUCTA PHARMACEUTICALS, INC. By: Name: Title: Source: ETON PHARMACEUTICALS, INC., 10-Q, 11/14/2019 Source: ETON PHARMACEUTICALS, INC., 10-Q, 11/14/2019
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Extract the exact clause related to "Anti-Assignment" from the excerpt above.

assistant: The Parties shall not assign, encumber or otherwise transfer this Agreement or any part of it to any Third Party, without the prior written consent of the other Party.