You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 3-[4-[(1-methylpyrazol-4-yl)methyl]-1,4-diazepan-1-yl]-5-phenyl-1,2,4-oxadiazole into molecular formula.
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C18H22N6O
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