[{"from": "human", "value": "Describe this molecule. [C][Branch2][Ring1][Ring2][C][S][C][C@@H1][C@H1][Branch1][N][C@H1][Branch1][Branch2][C][Branch1][Ring2][O][Ring1][Branch1][O][O][O][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is a member of homocysteines. It is functionally related to a D-ribofuranose. It is a tautomer of a S-(5-deoxy-D-ribos-5-yl)-L-homocysteine zwitterion."}]