You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 5-[(5-methylfuran-2-yl)methyl]-9-(3-pyrazin-2-yl-1,2,4-oxadiazol-5-yl)-1,5-diazacycloundecan-2-one into its molecular formula.
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C21H26N6O3
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