You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4E)-4-[(2-chloro-5-methoxyphenyl)-hydroxymethylidene]-1-(4-chloro-2-methylphenyl)-5-pyridin-2-ylpyrrolidine-2,3-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H18Cl2N2O4
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