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What is the molecular formula of the compound with this IUPAC name 5-[2-amino-4-chloro-7-[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]pyrrolo[2,3-d]pyrimidin-5-yl]pent-4-yn-1-ol ?
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C20H22ClN5O2
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