[{"from": "human", "value": "Describe this molecule. [C][C][C][C][C][C][C][C][C][C][C][C][C][O][C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O][C][C][C][C][C][C][C][C][C][C][C][C][C]"}, {"from": "gpt", "value": "Nearly colorless oily liquid. Floats on water. (USCG, 1999)"}]