You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named [(2R)-2-[5-[(3S)-3-aminopyrrolidin-1-yl]-6-methylpyrazolo[1,5-a]pyrimidin-2-yl]piperidin-1-yl]-(3-chloropyridin-2-yl)methanone by IUPAC nomenclature, provide its molecular formula.
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C22H26ClN7O
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