[{"from": "human", "value": "Generate a molecule based on this description. The molecule is an organic acid capable of chelating metal cations. (L612)"}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O][C][Branch1][=Branch1][C][=Branch1][C][=C][Cl][O][C][=Branch1][C][=O][C]"}]