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:
"""
ARTICLE II RESEARCH AND DEVELOPMENT PROGRAM 2.1 R&D Work Plan. The Parties agree to conduct the R&D Program pursuant to the R&D Work Plan and to perform their respective obligations therein. To the extent Conformis' performance under the R&D Program is delayed due to Stryker's delay in performing any of its obligations in accordance with the timelines in the R&D Work Plan, the applicable timelines shall be deemed extended by a period of time corresponding to the length of such portion of the delay attributable to Stryker, on a day-by- day basis. The R&D Work Plan may be amended by mutual written agreement of the Parties from time to time. 2.2 Agents or Third Parties. To the extent working with Agents or other Third Parties is permitted under the R&D Work Plan, should a Party wish to engage an Agent or any other Third Party in connection with the R&D Work Plan or any other work under this Agreement, such Party must obtain in advance a written agreement by such Agent or other Third Party (i) to assign to the Party all Inventions conceived, created or generated by the Agent or other Third Party, and (ii) to maintain all Confidential Information in confidence as set forth in Section 5.2. ARTICLE III DELIVERABLES AND COMPLETION 3.1 Deliverables. Subject to the remedies set forth in Section 3.4, Conformis shall furnish Stryker with the Deliverables as defined in the R&D Work Plan, and Stryker shall have the opportunity to analyze and test each Deliverable for the purposes of determining Acceptance as set forth in the R&D Work Plan. Each Deliverable shall be deemed to be completed once such Deliverable has been Accepted (as defined below). 3.2 Free from Infringement. Without the consent of Stryker, Conformis shall not introduce any structure or methodology in the Deliverables (including a Deliverable within a Product or a Stryker Product) that (1) raise a colorable argument of patent infringement in the manufacture, use, sale, offer for sale or importation of the Deliverable as such Deliverable 8 Source: CONFORMIS INC, 10-Q, 11/1/2019 is intended to be exploited under the Other Agreements, (2) misappropriate any Confidential Information of any Third Party, or (3) otherwise violate any Intellectual Property rights of any Third Party. For clarity, disclosure of a matter on the Disclosure Schedules to the Asset Purchase Agreement shall not be deemed consent by Stryker under this Section 3.2. 3.3 Completion. After a Deliverable has been furnished to Stryker, Stryker (or its Agent designee) will be entitled to analyze and test the Deliverable to determine if it operates in accordance with and otherwise conforms to the applicable Acceptance Criteria set forth in R&D Work Plan. Conformis shall provide such assistance as Stryker may reasonably request in such determination. Stryker shall have [**] ("Acceptance Notification Period") following the date the Deliverable is received by Stryker to Accept or reject the Deliverable as described in Section 3.4. 3.4 Acceptance or Rejection. Respecting any Deliverable for Milestone #1 or Milestone #2, as set forth below, if Stryker determines that a Deliverable operates in accordance with and otherwise conforms to the applicable Acceptance Criteria pursuant to the R&D Work Plan, then Stryker will notify Conformis in writing that Stryker Accepts such Deliverable. If Stryker reasonably determines that a Deliverable does not operate in accordance with or otherwise conform to the applicable Acceptance Criteria, then Stryker will provide Conformis with a written notice of rejection within the Acceptance Notification Period describing the defect in view of the relevant Acceptance Criteria and including sufficient detail with respect to such Stryker testing and testing results as Conformis reasonably requests ("Failure Notice"). Conformis shall have [**] (or such longer period of time as may be agreed between the parties in good faith should the scope and complexity of the applicable Deliverable warrant some longer period of time) ("Redelivery Period") following the date it receives the Failure Notice to correct and redeliver the Deliverable. If Conformis timely delivers a corrected version of the Deliverable within the Redelivery Period, then Stryker will be 9 Source: CONFORMIS INC, 10-Q, 11/1/2019 entitled to repeat its acceptance analysis and testing process for the purposes of determining Acceptance as set forth in the R&D Work Plan until such Deliverable operates in accordance with or otherwise conforms to the applicable Acceptance Criteria; provided, however, that if Stryker properly rejects a particular Deliverable three (3) or more times in accordance with this Article III, or if Conformis fails to deliver a version or corrected version, as
"""

Extract the exact clause related to "Renewal Term" from the excerpt above.

assistant: Not found.