[{"from": "human", "value": "Describe this molecule. [C][C@H1][C@@H1][Branch1][=N][C][C@H1][Branch1][Branch2][C][Branch1][Ring2][O][Ring1][=Branch1][O][O][O]"}, {"from": "gpt", "value": "The molecule is a lactol that is the pyranose form of ascarylose. It is an ascarylose and a lactol."}]