[{"from": "human", "value": "Please give me some details about this molecule. [C][C][C][C][C][C][C][C][C][O][C][=Branch1][C][=O][C]"}, {"from": "gpt", "value": "The molecule is a colorless liquid with a pungent odor of mushrooms. Less dense than water and insoluble in water. Hence floats on water. (USCG, 1999)"}]