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-(pyrrolidine-1-carbonyl)-4,6,7,8-tetrahydropyrazolo[1,5-a][1,4]diazepin-5-yl]-(1H-pyrrol-3-yl)methanone by IUPAC nomenclature, provide its molecular formula.
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C17H21N5O2
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