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