[{"from": "human", "value": "Please give me some details about this molecule. [C][C][C][=Branch1][C][=O][/C][=C][/C]"}, {"from": "gpt", "value": "The molecule is an enone that is hex-2-ene in which the two methylene hydrogens at position 4 have been replaced by an oxo group.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."}]