[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][=N][C][=C][Branch1][Branch2][C][=Branch1][Ring2][=N][Ring1][=Branch1][N][C][N][C][=Branch1][C][=O][N][Branch1][Ring2][C][C][Cl][N][=O].[Cl]"}, {"from": "gpt", "value": "The molecule is a hydrochloride obtained by combining nimustine with one equivalent of hydrochloric acid. An antineoplastic agent especially effective against malignant brain tumors. It has a role as an antineoplastic agent. It contains a nimustine(1+)."}]