[{"from": "human", "value": "Please give me some details about this molecule. [C][Branch1][=N][C][C][C][O][S][=Branch1][C][=O][=Branch1][C][=O][N][C][C][C][O][S][=Branch1][C][=O][=Branch1][C][=O][N]"}, {"from": "gpt", "value": "The molecule is a bisulfamic ester which is similar in structure to busulfan and belongs to the family of drugs known as alkylsulfonate alkylating agents.  Hepsulfam forms covalent linkages with nucleophilic centers in DNA, resulting in depurination, base miscoding, strand scission, DNA-DNA and DNA-protein cross-linking, and cytotoxicity. (NCI04)"}]