[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a phthalic acid monoester obtained by formal condensation of one of the carboxy groups of phthalic acid with the hydroxy group of isononanol. It has a role as a human xenobiotic metabolite."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C][C][C][C][C][C][O][C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O]"}]