[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an oxopurine."}, {"from": "gpt", "value": "[C][N][C][=C][Branch1][#Branch2][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O][N][Branch1][S][C][=Branch1][Ring2][=N][Ring1][#Branch2][S][C][=C][C][=C][C][=C][Ring1][=Branch1][C][C][O][C]"}]