You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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N-tert-butyl-3-fluoro-3-[3-(4-fluorophenyl)-1,2,4-oxadiazol-5-yl]pyrrolidine-1-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C17H20F2N4O2
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