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 N-(3-acetamidophenyl)-3-(5-pyridin-2-yl-1,3,4-oxadiazol-2-yl)propanamide is given. What is its corresponding molecular formula?
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C18H17N5O3
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