[{"from": "human", "value": "Generate a molecule based on this description. The molecule is the 2,3-didehydro derivative of D-glucose. It is a 2,3-didehydropyranose and a secondary alpha-hydroxy ketone."}, {"from": "gpt", "value": "[C][Branch2][Ring1][Branch1][C@@H1][C@H1][Branch1][S][C][=Branch1][C][=O][C][=Branch1][C][=O][C][Branch1][Ring2][O][Ring1][Branch2][O][O][O]"}]