You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-[[1-[3-oxo-3-[4-(1H-pyrrolo[2,3-b]pyridin-3-yl)-3,6-dihydro-2H-pyridin-1-yl]propyl]triazol-4-yl]methyl]acetamide by IUPAC nomenclature, provide its molecular formula.
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C20H23N7O2
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