You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2-chloro-4-phenylphenoxy)-N-[3-(5-oxo-4H-1,2,4-oxadiazol-3-yl)phenyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H16ClN3O4
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