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system
Provide the molecular formula for the IUPAC named substance 4-[(2-bromo-4,5-dimethoxyphenyl)-(3-methyl-5-oxo-1,2-dihydropyrazol-4-yl)methyl]-5-methyl-1,2-dihydropyrazol-3-one .
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C17H19BrN4O4
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