[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][O][C@@H1][C][C@H1][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][N][C][=Branch1][C][=O][N][Branch1][Ring2][C][C][Cl][N][=O]"}, {"from": "gpt", "value": "The molecule is a water-soluble nitrosoureido sugar derived from acosamine, with alkylating activity. Ecomustine alkylates and crosslinks DNA, thereby inhibiting replication and transcription and eventually resulting in a reduction of cellular proliferation."}]