You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 1-[3-[(3S,4R)-3-(dimethylamino)-4-methylpyrrolidin-1-yl]-3-oxopropyl]quinazoline-2,4-dione into its molecular formula.
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C18H24N4O3
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