[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a pivalate ester of 2-phenylethanol. It has a role as a metabolite. It is functionally related to a 2-phenylethanol."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][Branch1][C][C][C][=Branch1][C][=O][O][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]