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 1-[3-[5-(2,4-difluorophenyl)-1,3-oxazol-2-yl]propanoyl]-5-methylpiperidine-3-carboxylic acid into molecular formula.
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C19H20F2N2O4
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