[{"from": "human", "value": "Please give me some details about this molecule. [C][C@H1][C@H1][Branch2][#Branch1][#Branch1][C@H1][Branch2][#Branch1][C][C@@H1][Branch2][=Branch1][=N][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@@H1][C@H1][Branch2][Branch1][S][C@H1][Branch2][Branch1][O][C@H1][Branch2][Branch1][Branch1][O][C@H1][Ring1][=Branch1][O][C@@H1][C@H1][Branch2][Ring2][=Branch2][O][C][Branch2][Ring2][Ring1][C@@H1][Branch2][Ring1][=Branch2][C@H1][Ring1][=Branch1][O][C@H1][C@H1][Branch1][S][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][C][O][C][O][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a branched amino tetrasaccharide consisting of N-acetyl-D-glucosamine at the reducing end having an alpha-L-fucosyl residue attached at the 3-position and an alpha-L-fucosyl-(1->2)-beta-D-galactosyl moiety attached at the 4-position. It has a role as an antigen. It is an amino tetrasaccharide and a glucosamine oligosaccharide."}]