[{"from": "human", "value": "Provide a description of this molecule. [C][Branch1][Ring1][C][S][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is a homocysteine that has L configuration. It has a role as a mouse metabolite. It is a homocysteine and a serine family amino acid. It is a conjugate acid of a L-homocysteinate. It is a tautomer of a L-homocysteine zwitterion."}]