You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (4E)-1-(4-chlorophenyl)-4-[hydroxy-(4-methoxyphenyl)methylidene]-5-(2-methyl-1H-indol-3-yl)pyrrolidine-2,3-dione .
user
C27H21ClN2O4
assistant