[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][S][C][=N][C][=Branch1][O][=N][C][=C][Ring1][=Branch1][N][C][=N][Ring1][Branch1][N]"}, {"from": "gpt", "value": "The molecule is a metabolite of thioguanine, a drug used in cancer chemotherapy. It has a role as a human xenobiotic metabolite. It is a member of 2-aminopurines and a thiopurine. It is functionally related to a tioguanine."}]