[{"from": "human", "value": "Please give me some details about this molecule. [C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch2][Ring2][S][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][C@@H1][C@@H1][Branch1][S][C@@H1][Branch1][N][C@H1][Branch1][Branch2][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is alpha-Neup5Ac-(2->6)-D-Galp in which the anomeric configuration of the reducing-end D-galactose residue is beta. A 5-aminopentyl linker may be attached to the oxygen at position 1 of the reducing-end galactose residue. It has a role as an epitope."}]