[{"from": "human", "value": "Describe this molecule. [C][O][C][=Branch1][C][=O][C@H1][Branch1][#C][C][C][C][N][=C][Branch1][C][N][N][N+1][=Branch1][C][=O][O-1][N].[Cl]"}, {"from": "gpt", "value": "The molecule is a hydrochloride obtained by combining N(gamma)-nitro-L-arginine methyl ester with one equivalent of hydrochloric acid. It has a role as an EC 1.14.13.39 (nitric oxide synthase) inhibitor. It contains a N(gamma)-nitro-L-arginine methyl ester(1+)."}]