[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@H1][C@H1][Branch2][#Branch1][#Branch2][C@H1][Branch2][#Branch1][Branch1][C@@H1][Branch2][=Branch1][S][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@H1][C@@H1][Branch2][=Branch1][Ring1][C@@H1][Branch2][Branch1][=C][C@@H1][Branch2][Branch1][=Branch2][O][C@H1][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][N][C][=Branch1][C][=O][C][C][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a branched amino tetrasaccharide consisting of N-acetyl-glucosamine at the reducing end with an alpha-fucosyl-(1->2)-alpha-fucosyl group attached at the 3-position and an N-acetyl-beta-glucosaminyl residue attached at the 4-position. It has a role as an epitope. It is an amino tetrasaccharide and a glucosamine oligosaccharide."}]