You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-oxo-1-(4-sulfophenyl)-4-[[4-(trioxidanylsulfanyl)phenyl]diazenyl]-4H-pyrazol-2-ium-3-carboxylic acid into its molecular formula.
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C16H13N4O9S2+
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