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system
Name the molecular formula for the molecule established as 2-[(3S)-2',5'-dioxospiro[1,2-dihydroindene-3,4'-imidazolidine]-1'-yl]-N'-(3-ethyl-4-oxoquinazolin-2-yl)acetohydrazide using the IUPAC nomenclature.
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C23H22N6O4
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