[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an aldehyde that is the acyclic form of ascarylose. It is an ascarylose and an aldehyde."}, {"from": "gpt", "value": "[C][C@@H1][Branch1][N][C@@H1][Branch1][Branch2][C][C@H1][Branch1][Ring1][C][=O][O][O][O]"}]