You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (2S)-N-(1-cyanocyclopropyl)-1-propanoyl-4-[2-(trifluoromethyl)phenyl]sulfonylpyrrolidine-2-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C19H20F3N3O4S
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