You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 3-(4-methylpyrazol-1-yl)-1-[4-(4,5,6,7-tetrahydro-1H-indazole-3-carbonyl)-1,4-diazepan-1-yl]propan-1-one by IUPAC nomenclature, provide its molecular formula.
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C20H28N6O2
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