You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named [6-[4-(2-amino-3-nitropyridin-4-yl)pyrazol-1-yl]pyridin-3-yl]-(1-methylsulfonylpiperidin-4-yl)methanone is given. What is its corresponding molecular formula?
user
C20H21N7O5S
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