[{"from": "human", "value": "Could you provide a description of this molecule? [C][S][=Branch1][C][=O][=Branch1][C][=O][O][C][C][C][N][C][C][C][O][S][=Branch1][C][=O][=Branch1][C][=O][C]"}, {"from": "gpt", "value": "The molecule is an alkylsulfonate alkylating agent that cross-links with DNA, causing inhibition of DNA synthesis."}]