[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a member of pyrimidines."}, {"from": "gpt", "value": "[C][C][=C][Branch1][=Branch1][S][C][=C][Ring1][Branch1][/C][=C][/C][=N][C][C][C][N][Ring1][=Branch1][C]"}]