[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a hexanoate ester resulting from the formal condensation of hexanoic acid (caproic acid) with isobutanol. It has a role as a metabolite. It is functionally related to an isobutanol."}, {"from": "gpt", "value": "[C][C][C][C][C][C][=Branch1][C][=O][O][C][C][Branch1][C][C][C]"}]