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 (5S)-1-[2-(dimethylamino)ethyl]-4-[hydroxy-(4-methoxyphenyl)methylidene]-5-(3-nitrophenyl)pyrrolidine-2,3-dione ?
user
C22H23N3O6
assistant