[{"from": "human", "value": "Describe this molecule. [C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch2][Branch1][P][C@@H1][Branch2][Branch1][N][C@H1][Branch2][Branch1][=Branch1][O][C@H1][Ring1][=Branch1][O][C][C@@H1][C@@H1][Branch2][Ring2][#Branch2][C@@H1][Branch1][P][C@H1][Branch1][Branch2][C][Branch1][Ring2][O][Ring1][=Branch1][O][N][C][=Branch1][C][=O][C][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][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is a branched amino trisaccharide comprising N-acetyl-D-galactose having a beta-D-galactosyl residue at the 3-position and a N-acetyl-beta-D-glucosaminyl residue at the 6-position. It has a role as an epitope. It is an amino trisaccharide, a glucosamine oligosaccharide and a galactosamine oligosaccharide."}]