You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named propan-2-yl 4-(2,5-dimethoxyphenyl)-2-methyl-5-oxo-4,6,7,8-tetrahydro-1H-quinoline-3-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C22H27NO5
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