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 2-[4-[5-(4-fluorophenyl)-1,3,4-oxadiazol-2-yl]piperidin-1-yl]-N-propylacetamide is given. What is its corresponding molecular formula?
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C18H23FN4O2
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