[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1].[Na+1].[Na+1]"}, {"from": "gpt", "value": "The molecule is a sodium salt that is the disodium salt of succinic acid. The hexahydrate form is used as an ingredient of topical preparations for the treatment of cataract. It contains a succinate(2-)."}]