[{"from": "human", "value": "What can you tell me about this molecule? [C][C][=C][C][=Branch1][=Branch1][=C][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. (USCG, 1999)"}]