[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch2][Branch2][C][C][C@@][Branch1][#C][O][C@H1][Ring1][=Branch1][C@@H1][Branch1][#Branch1][C@@H1][Branch1][Ring1][C][O][O][O][Branch1][=Branch1][C][=Branch1][C][=O][O][O][C@H1][C@H1][Branch2][=Branch1][C][C@H1][Branch2][Branch1][N][O][C@H1][Branch1][Branch1][C@@H1][Ring1][=Branch1][O][O][C@@H1][C@H1][Branch2][Ring2][N][O][C@H1][Branch1][=C][C@@H1][Branch1][Branch1][C@H1][Ring1][=Branch1][O][N][C][=Branch1][C][=O][C][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][O][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is a linear amino tetrasaccharide comprising alpha-sialyl, beta-D-galactosyl, N-acetyl-beta-D-glucosaminyl and N-acetyl-D-galactosamine residues in a (2->3), (1->4) and (1->3) sequence. It has a role as an epitope. It is an amino tetrasaccharide, a glucosamine oligosaccharide and a galactosamine oligosaccharide."}]