[{"from": "human", "value": "Generate a molecule based on this description. The molecule appears as a colorless liquid with a mild odor. Less dense than water and insoluble in water. Hence floats on water. (USCG, 1999)"}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]