[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a pyrimidone."}, {"from": "gpt", "value": "[C][C][N][C][C][C][C][C][C][Branch1][Ring2][C][Ring1][Branch2][C][Ring1][#Branch1][=N][C][Branch1][Branch2][C][C][C][C][C][Ring1][=Branch1][N][C][Ring1][N][=O]"}]