[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule appears as a colorless liquid with a pleasant odor. Insoluble in water and less dense than water. Flash point 120 \u00b0F. Toxic by inhalation. A skin irritant. Used to make flavorings and as a solvent."}, {"from": "gpt", "value": "[C][C][C][C][=Branch1][C][=O][C][C][C]"}]