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