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