You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by (4E,5S)-4-[hydroxy-[4-(2-methylpropoxy)phenyl]methylidene]-1-(2-methoxyethyl)-5-(3,4,5-trimethoxyphenyl)pyrrolidine-2,3-dione ?
user
C27H33NO8
assistant