[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][C][Branch1][Ring2][C][Ring1][Branch1][N][C][=N][C][=C][Ring1][Branch1][N][C][=N][C][Ring1][=Branch1][=S]"}, {"from": "gpt", "value": "The molecule is a member of purines and a thiocarbonyl compound."}]