[{"from": "human", "value": "Please give me some details about this molecule. [C][N+1][Branch1][Ring2][C][C][Cl][Branch1][Ring2][C][C][Cl][O-1].[Cl]"}, {"from": "gpt", "value": "The molecule is a nitrogen mustard alkylating agent that causes DNA cross linkages. It is a known carcinogen especially in mice. (NCI)"}]