You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[(3S)-2,5-dioxo-3,4-dihydro-1H-1,4-benzodiazepin-3-yl]-N-(3-methyl-4-oxoquinazolin-6-yl)acetamide by IUPAC nomenclature, provide its molecular formula.
user
C20H17N5O4
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