[{"from": "human", "value": "Describe this molecule. [C][Branch2][=Branch1][Ring1][C@@H1][C@@H1][Branch2][Branch1][=N][C@@H1][Branch2][Branch1][Branch2][C@H1][Branch2][Branch1][Ring1][C][Branch1][Ring2][O][Ring1][=Branch1][O][C][C@@H1][C@@H1][Branch2][Ring2][Branch1][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][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a trisaccharide consisting of D-galactopyranose, beta-D-galactopyranose and D-glucopyranose joined in sequence by (1->6) and (1->4) glycosidic bonds. It is a trisaccharide and a partially-defined glycan. It is functionally related to a lactose."}]