You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named methyl (4R,7S)-4-(3-bromo-4,5-dimethoxyphenyl)-7-(3,4-dimethoxyphenyl)-2-methyl-5-oxo-4,6,7,8-tetrahydro-1H-quinoline-3-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C28H30BrNO7
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