You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 2-pyridin-3-yl-5-[(2R)-1-[3-(trifluoromethyl)phenyl]sulfonylpyrrolidin-2-yl]-1,3,4-oxadiazole into its molecular formula.
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C18H15F3N4O3S
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