[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an orally-active antineoplastic aromatic nitrogen mustard. Chlorambucil alkylates and cross-links DNA during all phases of the cell cycle, resulting in disruption of DNA function, cell cycle arrest, and apoptosis.  (NCI04)"}, {"from": "gpt", "value": "[C][=C][C][=Branch1][=C][=C][C][=C][Ring1][=Branch1][C][C][C][C][=Branch1][C][=O][O][N][Branch1][Ring2][C][C][Cl][C][C][Cl]"}]