[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch2][Ring2][Branch2][C@@H1][Branch2][Ring2][Ring1][C@H1][Branch2][Ring1][=N][O][C@@H1][Ring1][=Branch1][O][C@H1][C@@H1][Branch2][Ring1][C][C@H1][Branch1][=C][C][Branch1][#Branch2][O][C@@H1][Ring1][=Branch1][C][=Branch1][C][=O][O][O][O][O][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is a carbohydrate acid derivative that consists of D-glucuronic acid having an N-acetyl-alpha-D-glucosaminyl residue attached at position 4. An intermediate glycan in the degradation of heparan sulfate. It is a carbohydrate acid derivative, an amino disaccharide and a glucosamine oligosaccharide."}]