[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an enal. It is functionally related to an acrolein and an alpha-campholenaldehyde. It derives from a hydride of a cyclopentene."}, {"from": "gpt", "value": "[C][C][=C][C][C][Branch1][Branch2][C][Ring1][Branch1][Branch1][C][C][C][C][=Branch1][C][=C][C][=O]"}]