[{"from": "human", "value": "Describe this molecule. [C][S][C][=Branch1][=C][=N][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][N]"}, {"from": "gpt", "value": "The molecule is an L-arginine derivative in which the guanidino NH2 group of L-arginine is replaced by a methylsufanyl group. It has a role as an EC 1.14.13.39 (nitric oxide synthase) inhibitor and a neuroprotective agent. It is a L-arginine derivative, a L-ornithine derivative, a non-proteinogenic L-alpha-amino acid and an imidothiocarbamic ester."}]