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Under IUPAC nomenclature, a molecule named 5-chloro-N-[5-methyl-2-(4-oxo-1-phenyl-5H-pyrazolo[3,4-d]pyrimidin-6-yl)pyrazol-3-yl]-2-nitrobenzamide is given. What is its corresponding molecular formula?
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C22H15ClN8O4
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