[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an odorless colorless liquid. An aqueous solution. Sinks and mixes with water. (USCG, 1999)"}, {"from": "gpt", "value": "[B-1][Branch1][C][F][Branch1][C][F][Branch1][C][F][F].[B-1][Branch1][C][F][Branch1][C][F][Branch1][C][F][F].[Pb+2]"}]