[{"from": "human", "value": "Please give me some details about this molecule. [O-1][S][=Branch1][C][=O][O-1].[Na+1].[Na+1]"}, {"from": "gpt", "value": "The molecule is an inorganic sodium salt having sulfite as the counterion. It has a role as a food preservative and a reducing agent. It is an inorganic sodium salt and a sulfite salt. It contains a sulfite."}]