You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (3R,5S)-5-[[4-(5-chloro-2-fluorophenyl)phenyl]methyl]-1-(2,2-dimethylpropanoyl)-3-methylpyrrolidin-2-one .
user
C23H25ClFNO2
assistant