[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch2][Branch1][S][C@@H1][C@@H1][Branch2][Branch1][#Branch2][C@@H1][Branch2][Ring1][S][C@H1][Branch2][Ring1][O][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@@H1][C@H1][Branch1][=C][O][C][Branch1][=Branch2][C@@H1][Branch1][Branch1][C@H1][Ring1][=Branch1][O][O][O][C][O][O][O][C][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]"}, {"from": "gpt", "value": "The molecule is a trisaccharide that is lactose in which the hydroxy group at the 3' position has been converted to the corresponding D-galactopyranosyl derivative. It is a trisaccharide and a partially-defined glycan. It is functionally related to a lactose and a D-galactopyranose."}]