[{"from": "human", "value": "Describe this molecule. [C][S][=Branch1][C][=O][=Branch1][C][=O][O][C][C][N][C][C@H1][Branch2][Ring1][C][C@H1][Branch1][=C][C][N][C][C][O][S][=Branch1][C][=O][=Branch1][C][=O][C][O][O]"}, {"from": "gpt", "value": "The molecule is a sulfonate-based alkylation agent with potential antineoplastic activity. Ritrosulfan appears to alkylate DNA, thereby producing DNA crosslinks, resulting in cell cycle arrest."}]