[{"from": "human", "value": "Provide a description of this molecule. [O-1][S][=Branch1][C][=O][S][=Branch1][C][=O][O-1].[Zn+2]"}, {"from": "gpt", "value": "The molecule is a food contaminant arising from its use as a packaging additive\n\nZinc dithionite belongs to the family of Transition Metal Dithionites. These are inorganic compounds in which the largest oxoanion is dithionite, and in which the heaviest atom not in an oxoanion is a transition metal."}]