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What is the molecular formula of the compound with this IUPAC name 2'-(1-pyridin-2-ylpiperidin-3-yl)spiro[1H-pyrrolo[2,3-b]pyridine-3,6'-5,7-dihydro-3H-cyclopenta[f]benzimidazole]-2-one ?
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C26H24N6O
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