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 (2,6-difluorophenyl)-[(3R,4R)-3-methyl-4-(3-pyridin-4-yl-1,2,4-oxadiazol-5-yl)pyrrolidin-1-yl]methanone into molecular formula.
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C19H16F2N4O2
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