[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an oxopurine."}, {"from": "gpt", "value": "[C][C][N][C][C][C][C][Branch1][Ring2][C][Ring1][=Branch1][S][C][=N][C][=C][Branch1][Ring2][N][Ring1][Branch1][C][=Branch1][C][=S][N][Branch1][=Branch2][C][=Branch1][C][=O][N][Ring1][=Branch2][C][C]"}]