[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a colorless liquid. Sinks and mixes with water. (USCG, 1999)"}, {"from": "gpt", "value": "[C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][C][C][C][O][Ring1][Ring1]"}]