[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule appears as brown solid or clear to amber liquid with a soapy odor. Sinks and mixes slowly with water. (USCG, 1999)"}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][/C][=C][\\C][C][C][C][C][C][C][C][=Branch1][C][=O][O-1].[K+1]"}]