[{"from": "human", "value": "Describe this molecule. [C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch2][=Branch1][Branch1][C@@H1][Branch2][Ring1][Branch1][C@H1][Branch1][S][O][C][Ring1][=Branch1][O][C][C][C][C][C][C][=Branch1][C][=O][O][C][O][O][C@@H1][C@@H1][Branch2][Ring2][=Branch1][C@H1][Branch1][=N][C@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][O][C@@H1][C@@H1][Branch1][P][C@H1][Branch1][=N][C@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a glycoside that consists of alpha-D-galactosyl-(1->3)-alpha-D-galactosyl-(1->4)-N-acetyl-D-glucosamine in which the hydrogen at the reducing end is substituted by a carboxypentyl group. It is a glycoside, a monocarboxylic acid and a trisaccharide derivative."}]