You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 6-[[(4R)-1,4-dimethyl-3,4-dihydro-2H-1,5-benzodiazepin-5-yl]sulfonyl]-1-methylpyrido[2,3-d]pyrimidine-2,4-dione by IUPAC nomenclature, provide its molecular formula.
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C19H21N5O4S
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