You are a helpful assistant. The assistant first thinks about the reasoning process in the mind and then provides the user with the answer. The reasoning process and answer must be formatted exactly as follows:
<think>
[your reasoning process here]
</think>
<answer>
[your answer here]
</answer>
You can choose to imitate the reasoning process of relevant algorithms or explore an appropriate solution on your own. DO NOT use code, and remember to focus on the logical flow.
system
You are required to solve the Maximum Clique Problem for an undirected academic network. In this network, nodes represent authors and edges represent research collaborations. Your objective is to find the largest subset of nodes such that every pair of vertices in this subset is connected by an edge.

**Problem to Solve**

- Authors in the network: Joachim H. G. Ender, Holger Nies, Otmar Loffeld, Xiang Cheng, Shichao Chen, Ingo Walterscheid, Mengdao Xing, Zheng Bao, Jens Klare
- Research collaborations between these authors: Joachim H. G. Ender and Mengdao Xing, Joachim H. G. Ender and Zheng Bao, Joachim H. G. Ender and Otmar Loffeld, Joachim H. G. Ender and Holger Nies, Joachim H. G. Ender and Ingo Walterscheid, Joachim H. G. Ender and Jens Klare, Joachim H. G. Ender and Shichao Chen, Holger Nies and Mengdao Xing, Holger Nies and Zheng Bao, Holger Nies and Otmar Loffeld, Holger Nies and Ingo Walterscheid, Holger Nies and Jens Klare, Holger Nies and Shichao Chen, Otmar Loffeld and Mengdao Xing, Otmar Loffeld and Zheng Bao, Otmar Loffeld and Ingo Walterscheid, Otmar Loffeld and Jens Klare, Otmar Loffeld and Shichao Chen, Xiang Cheng and Shichao Chen, Shichao Chen and Mengdao Xing, Shichao Chen and Zheng Bao, Shichao Chen and Ingo Walterscheid, Shichao Chen and Jens Klare, Ingo Walterscheid and Mengdao Xing, Ingo Walterscheid and Zheng Bao, Ingo Walterscheid and Jens Klare, Mengdao Xing and Zheng Bao, Mengdao Xing and Jens Klare, Zheng Bao and Jens Klare.
Identify the clique with the maximum number of authors in this network. Present your answer in the following format: [AuthorA, AuthorB, AuthorC, AuthorD, ...].
user
{"directed": false, "multigraph": false, "graph": {}, "nodes": [{"name": "Joachim H. G. Ender", "id": 420164}, {"name": "Holger Nies", "id": 418917}, {"name": "Otmar Loffeld", "id": 121419}, {"name": "Xiang Cheng", "id": 267243}, {"name": "Shichao Chen", "id": 668302}, {"name": "Zheng Bao", "id": 89180}, {"name": "Mengdao Xing", "id": 89179}, {"name": "Ingo Walterscheid", "id": 572764}, {"name": "Jens Klare", "id": 572765}], "links": [{"source": 420164, "target": 89179}, {"source": 420164, "target": 89180}, {"source": 420164, "target": 121419}, {"source": 420164, "target": 418917}, {"source": 420164, "target": 572764}, {"source": 420164, "target": 572765}, {"source": 420164, "target": 668302}, {"source": 418917, "target": 89179}, {"source": 418917, "target": 89180}, {"source": 418917, "target": 121419}, {"source": 418917, "target": 572764}, {"source": 418917, "target": 572765}, {"source": 418917, "target": 668302}, {"source": 121419, "target": 89179}, {"source": 121419, "target": 89180}, {"source": 121419, "target": 572764}, {"source": 121419, "target": 572765}, {"source": 121419, "target": 668302}, {"source": 267243, "target": 668302}, {"source": 668302, "target": 89179}, {"source": 668302, "target": 89180}, {"source": 668302, "target": 572764}, {"source": 668302, "target": 572765}, {"source": 89180, "target": 89179}, {"source": 89180, "target": 572764}, {"source": 89180, "target": 572765}, {"source": 89179, "target": 572764}, {"source": 89179, "target": 572765}, {"source": 572764, "target": 572765}]}
You are required to solve the Maximum Clique Problem for an undirected academic network. In this network, nodes represent authors and edges represent research collaborations. Your objective is to find the largest subset of nodes such that every pair of vertices in this subset is connected by an edge.

**Problem to Solve**

- Authors in the network: Joachim H. G. Ender, Holger Nies, Otmar Loffeld, Xiang Cheng, Shichao Chen, Ingo Walterscheid, Mengdao Xing, Zheng Bao, Jens Klare
- Research collaborations between these authors: Joachim H. G. Ender and Mengdao Xing, Joachim H. G. Ender and Zheng Bao, Joachim H. G. Ender and Otmar Loffeld, Joachim H. G. Ender and Holger Nies, Joachim H. G. Ender and Ingo Walterscheid, Joachim H. G. Ender and Jens Klare, Joachim H. G. Ender and Shichao Chen, Holger Nies and Mengdao Xing, Holger Nies and Zheng Bao, Holger Nies and Otmar Loffeld, Holger Nies and Ingo Walterscheid, Holger Nies and Jens Klare, Holger Nies and Shichao Chen, Otmar Loffeld and Mengdao Xing, Otmar Loffeld and Zheng Bao, Otmar Loffeld and Ingo Walterscheid, Otmar Loffeld and Jens Klare, Otmar Loffeld and Shichao Chen, Xiang Cheng and Shichao Chen, Shichao Chen and Mengdao Xing, Shichao Chen and Zheng Bao, Shichao Chen and Ingo Walterscheid, Shichao Chen and Jens Klare, Ingo Walterscheid and Mengdao Xing, Ingo Walterscheid and Zheng Bao, Ingo Walterscheid and Jens Klare, Mengdao Xing and Zheng Bao, Mengdao Xing and Jens Klare, Zheng Bao and Jens Klare.
Identify the clique with the maximum number of authors in this network. Present your answer in the following format: [AuthorA, AuthorB, AuthorC, AuthorD, ...].
test