[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a phthalate ester that is the dipentyl ester of benzene-1,2-dicarboxylic acid. It has a role as a plasticiser. It is a phthalate ester and a diester. It is functionally related to a pentan-1-ol."}, {"from": "gpt", "value": "[C][C][C][C][C][O][C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O][C][C][C][C][C]"}]