[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch1][#C][C@@H1][Branch1][O][C@H1][Branch1][=Branch1][O][C][Ring1][=Branch1][O][C][O][O][O][C@H1][C@@H1][Branch1][P][C@H1][Branch1][=N][C][=C][Branch1][Ring2][O][Ring1][=Branch1][C][=Branch1][C][=O][O][O][O]"}, {"from": "gpt", "value": "The molecule is an amino disaccharide consisting of N-acetyl-D-glucosamine having a 4-deoxy-alpha-L-threo-hex-4-enopyranuronosyl residue attached at the 3-position. It is an alpha,beta-unsaturated monocarboxylic acid, an amino disaccharide and a carbohydrate acid derivative."}]