[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a macromolecule composed of repeating propyleneoxy units. It is a hydroxypolyether and a poly(ether) macromolecule."}, {"from": "gpt", "value": "[C][C][Branch1][Ring1][C][O][O][C][C][Branch1][C][C][O]"}]