[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an acetate ester obtained by the formal condensation of the carboxy group of (acetyloxy)acetic acid with 2-methylbutanol. It has a role as a metabolite."}, {"from": "gpt", "value": "[C][C][C][Branch1][C][C][C][O][C][=Branch1][C][=O][C][O][C][=Branch1][C][=O][C]"}]