[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a colorless liquid with a pleasant odor. Floats on water. (USCG, 1999)"}, {"from": "gpt", "value": "[C][C][Branch1][C][C][Branch1][C][C][C][C][C][C][C][C][=Branch1][C][=O][O][C][=C]"}]