[{"from": "human", "value": "What can you tell me about this molecule? [C][C@H1][C@H1][Branch2][#Branch1][=Branch1][C@H1][Branch2][=Branch1][P][C@@H1][Branch2][=Branch1][N][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@@H1][C@H1][Branch2][Branch1][#C][C@H1][Branch2][Ring2][Branch1][C@H1][Branch2][Ring1][#C][O][C@H1][Ring1][=Branch1][O][C@@H1][C@H1][Branch2][Ring1][Ring1][O][C@H1][Branch1][=C][C@@H1][Branch1][Branch1][C@H1][Ring1][=Branch1][O][N][C][=Branch1][C][=O][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][O]"}, {"from": "gpt", "value": "The molecule is an amino tetrasaccharide in which an alpha-L-fucosyl residue is linked (1->2) to the middle galactosyl residue of an alpha-D-galactosyl-(1->4)-beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosamine trisaccharide. It has a role as an epitope. It is an amino tetrasaccharide and a glucosamine oligosaccharide."}]