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 [(2R)-2-[5-(1-methylpyrazol-4-yl)-1,2,4-oxadiazol-3-yl]azepan-1-yl]-pyridin-3-ylmethanone into its molecular formula.
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C18H20N6O2
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