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 2-phenyl-1-[3-[2-(3-pyrazin-2-yl-1,2,4-oxadiazol-5-yl)phenoxy]azetidin-1-yl]ethanone into molecular formula.
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C23H19N5O3
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