[{"from": "human", "value": "Provide a description of this molecule. [C][C@H1][C@H1][Branch2][Branch1][S][C@H1][Branch2][Branch1][O][C@@H1][Branch2][Branch1][=Branch1][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@H1][C@@H1][Branch2][Ring1][Ring2][C@H1][Branch1][#C][O][C][Branch1][#Branch2][C@@H1][Ring1][=Branch1][N][C][=Branch1][C][=O][C][O][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][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is an amino trisaccharide consisting of N-acetylglucosamine having a fucosyl residue attached at the 3-position via an alpha-linkage and a galactosyl residue attached at the 4-position via a beta-linkage. It has a role as an epitope and an antigen. It is an amino trisaccharide and a glucosamine oligosaccharide."}]