[{"from": "human", "value": "Describe this molecule. [C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C]"}, {"from": "gpt", "value": "The molecule appears as a colorless watery liquid with a sweet odor. Less dense than water. Insoluble in water. Irritating vapor. Freezing point is 56 \u00b0F. (USCG, 1999)"}]