You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4Z)-4-[(3,4-dimethoxyphenyl)-hydroxymethylidene]-1-pentyl-5-pyridin-4-ylpyrrolidine-2,3-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H26N2O5
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