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system
Name the molecular formula for the molecule established as (E)-3-[5-chloro-3-[5-(hydroxymethyl)-1,3,4-oxadiazol-2-yl]-3-methyl-2H-pyridin-6-yl]-N-[4-(1,1-difluoropropyl)phenyl]but-2-enamide using the IUPAC nomenclature.
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C22H23ClF2N4O3
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