[{"from": "human", "value": "Could you provide a description of this molecule? [C][Branch2][Branch1][Branch2][C@@H1][C@H1][Branch2][Ring1][=Branch2][C@@H1][Branch2][Ring1][Ring2][C@H1][Branch1][Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][O][N][S][=Branch1][C][=O][=Branch1][C][=O][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 heparan sulfate composed of a backbone of repeating alpha-L-iduronosyl-(1->4)-N-sulfonyl-alpha-D-glucosamine units joined by (1->4)-linkages. It has a role as a mouse metabolite. It is a member of heparan sulfates and a member of iduronic acids. It is functionally related to a L-idopyranuronic acid. It is a conjugate acid of a heparosan N-sulfate L-iduronate polyanion."}]