You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 2-(3,3-difluoropiperidin-4-yl)oxy-5-[2-(propan-2-ylamino)pyrimidin-4-yl]benzonitrile into molecular formula.
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C19H21F2N5O
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