[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch2][Branch1][#C][C@@H1][C@@H1][Branch2][Branch1][=Branch2][C@@H1][Branch2][Branch1][Ring2][C@H1][Branch2][Ring2][#C][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@H1][C@H1][Branch2][Ring1][P][O][C@H1][Branch1][=Branch2][C@@H1][Branch1][Branch1][C@H1][Ring1][=Branch1][O][O][O][C@@H1][C@H1][Branch1][=C][O][C@@H1][Branch1][=Branch2][C@@H1][Branch1][Branch1][C@H1][Ring1][=Branch1][O][O][O][C][O][C][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a trisaccharide consisting of two beta-D-galactopyranose residues and an alpha-D-glucopyranose residue joined in sequence by (1->4) glycosidic bonds. It is functionally related to an alpha-lactose and a beta-D-galactopyranosyl-(1->4)-beta-D-galactopyranose."}]