[{"from": "human", "value": "Please give me some details about this molecule. [C][C][O][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][C][C][C][C][S][C][=N][C][=N][C][=C][Ring1][=Branch1][N][C][=N][Ring1][Branch1]"}, {"from": "gpt", "value": "The molecule is a S-substituted analog of mercaptopurine and purine antagonist with cytostatic activity. Butocin inhibits purine nucleotide synthesis and DNA replication."}]