You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-(2,6-dimethylanilino)-2-oxoethyl] 3-[(4-hydroxyphenyl)methylidene]-1,2-dihydrocyclopenta[b]quinoline-9-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H26N2O4
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