[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch2][Branch1][S][C@@H1][Branch1][O][C@H1][Branch1][=Branch1][O][C@H1][Ring1][=Branch1][O][C][O][O][C@H1][C@@H1][Branch2][Ring2][N][C@H1][Branch2][Ring2][#Branch1][C@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][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][N][C][=Branch1][C][=O][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is a linear amino trisaccharide comprising a sequence of N-acetyl-beta-D-glucosamine, beta-D-galactose and another N-acetyl-beta-D-glucosamine connected by (1->4) linkages. It has a role as an epitope. It is an amino trisaccharide and a glucosamine oligosaccharide."}]