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-[4-[7-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-4,7-diazaspiro[2.5]octane-4-carbonyl]phenyl]propane-2-sulfonamide by IUPAC nomenclature, provide its molecular formula.
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C22H26N6O3S
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