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 (2R)-N-(3-methylphenyl)-2-(4-oxo-6,7,8,9-tetrahydropyrimido[4,5-b]quinolin-3-yl)butanamide into its molecular formula.
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C22H24N4O2
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