[{"from": "human", "value": "Provide a description of this molecule. [C][Branch2][Branch1][Ring2][C@H1][C@H1][Branch2][Ring1][Branch1][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][O][O][S][=Branch1][C][=O][=Branch1][C][=O][O][O][C@H1][C@@H1][Branch2][Ring1][Ring2][C@H1][Branch1][S][C@@H1][Branch1][N][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][C][=Branch1][C][=O][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a glycosyl alditol derivative consisting of an alpha-L-idopyranuronic acid residue and a 2,5-anhydro-4-O-sulfo-D-glucitol residue joined in sequence by a (1->3) glycosidic bond. It is a glycosyl alditol derivative, a monocarboxylic acid and an oligosaccharide sulfate. It is functionally related to an alpha-L-iduronic acid."}]