[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C@@H1][C@@H1][Branch2][Branch1][=Branch2][C][C@H1][Branch2][Branch1][Ring1][C@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@H1][C@@H1][Branch2][Ring2][=Branch1][C@H1][Branch2][Ring1][S][O][C@@H1][Branch2][Ring1][#Branch2][C@H1][Ring1][=Branch1][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][C][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a branched trisaccharide consisting of D-abequose, D-galactose and D-mannose residues joined via alpha-linkages with mannose at the reducing end. It has a role as an epitope."}]