You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (3S,4S)-1-[(4-ethylpyridin-2-yl)methylcarbamoyl]-4-(trifluoromethyl)pyrrolidine-3-carboxylic acid is given. What is its corresponding molecular formula?
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C15H18F3N3O3
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