[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is the trans-isomer of aconitic acid. It has a role as a fundamental metabolite. It is a conjugate acid of a trans-aconitate(3-)."}, {"from": "gpt", "value": "[C][Branch1][#C][/C][=Branch1][#Branch1][=C][\\C][=Branch1][C][=O][O][/C][=Branch1][C][=O][O][C][=Branch1][C][=O][O]"}]