[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is an enone that is hex-2-ene in which the two methylene hydrogens at position 4 have been replaced by an oxo group. It has a role as a flavouring agent, a plant metabolite and a human metabolite."}, {"from": "gpt", "value": "[C][C][C][=Branch1][C][=O][/C][=C][/C]"}]