You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4E)-4-[(4-chloro-2,5-dimethoxyphenyl)-hydroxymethylidene]-1-(2-propan-2-yloxyethyl)-5-(4-propan-2-ylphenyl)pyrrolidine-2,3-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H32ClNO6
assistant