[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a methyl ketone that is tridecane in which the methylene hydrogens at position 2 are replaced by an oxo group. It has a role as a plant metabolite and a flavouring agent. It derives from a hydride of a tridecane."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][C]"}]