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 tert-butyl N-[2-[3-(5-pyridin-2-ylpyridin-2-yl)-1,2,4-oxadiazol-5-yl]propan-2-yl]carbamate is given. What is its corresponding molecular formula?
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C20H23N5O3
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