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What is the molecular formula of the compound with this IUPAC name 1-[(7S)-7-[[2-[(1-ethylpyrazol-4-yl)amino]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]oxy]-5-azaspiro[2.4]heptan-5-yl]prop-2-en-1-one ?
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C20H23N7O2
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