[{"from": "human", "value": "Provide a description of this molecule. [C][=Branch1][C][=O][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O-1].[Na+1].[Na+1]"}, {"from": "gpt", "value": "The molecule is an odorless white solid. Sinks and mixes slowly with water. (USCG, 1999)"}]