[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an all trans dicarboxylic acid that is a metabolite of benzene and is used as a marker for occupational or environmental exposure to benzene."}, {"from": "gpt", "value": "[C][=Branch1][#Branch1][=C][/C][=Branch1][C][=O][O][\\C][=C][\\C][=Branch1][C][=O][O]"}]