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 1-[3-[3-(1-aminocyclopentyl)-1,2,4-oxadiazol-5-yl]-5-(trifluoromethyl)phenyl]pyrrolidin-2-one;hydrochloride is given. What is its corresponding molecular formula?
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C18H20ClF3N4O2
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