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-[4-[(2R)-2-[3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazol-5-yl]pyrrolidine-1-carbonyl]piperidin-1-yl]ethanone into molecular formula.
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C21H23F3N4O3
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