[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is an ionic polymer resulting from the deprotonation of the terminal carboxy groups of poly(ethylene terephthalate) polymer. It is an ionic polymer and a homopolymer macromolecule. It is a conjugate base of a poly(ethylene terephthalate) polymer."}, {"from": "gpt", "value": "[C][=C][C][=Branch1][O][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O][C][C][O]"}]