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system
Name the molecular formula for the molecule established as (4S)-4-[[2,5-dimethoxy-4-(2-sulfooxyethylsulfonyl)phenyl]diazenyl]-5-oxo-1-(4-sulfophenyl)-4H-pyrazole-3-carboxylic acid using the IUPAC nomenclature.
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C20H20N4O14S3
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