You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-oxo-4-(3-oxo-2,4-dihydroquinoxalin-1-yl)-N-(1,2,3,4-tetrahydronaphthalen-1-yl)butanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H23N3O3
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