[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@@H1][C@H1][Branch2][Ring2][#Branch1][C][C@@H1][Branch2][Ring1][P][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@@H1][C@H1][Branch1][S][C@@H1][Branch1][O][O][C@@H1][Branch1][Branch1][C@@H1][Ring1][=Branch1][O][C][O][O][C][N][C][=Branch1][C][=O][C][O][O]"}, {"from": "gpt", "value": "The molecule is an amino disaccharide consisting of N-acetyl-beta-D-galactosamine having a beta-D-tyvelosyl residue attached at the 3-position and with the anomeric hydroxy group replaced by methoxy. It has a role as an epitope. It is a methyl glycoside and an amino disaccharide."}]