[{"from": "human", "value": "Describe this molecule. [C][=C][O][C@@H1][Branch1][=Branch2][C@@H1][Branch1][Branch1][C@@H1][Ring1][=Branch1][O][O][C][O]"}, {"from": "gpt", "value": "The molecule is a glycal derived from D-galactopyranose It is a glycal and an anhydrohexose."}]