[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule appears as white solid or heated colorless liquid. Has no odor. Liquid solidifies in cool water. Solid and liquid sink in water. (USCG, 1999)"}, {"from": "gpt", "value": "[C][O][C][=Branch1][C][=O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O][C]"}]