[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=N][C][Branch1][N][C][=Branch1][Ring2][=N][Ring1][Branch1][C][=Branch1][C][=O][N][N][=N][N][Branch1][Ring2][C][C][Cl][C][C][Cl]"}, {"from": "gpt", "value": "The molecule is a synthetic derivative of imidazole with potent antineoplastic properties.  Imidazole mustard alkylates DNA, preferentially at guanine residues, resulting in DNA interstrand crosslinks and inhibition of DNA replication and RNA and protein synthesis. (NCI04)"}]