[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is an undecenal in which the C=C bond is located at the 2-3 position. It is an undecenal, a n-alk-2-enal and a volatile organic compound."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][/C][=C][/C][=O]"}]