You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule [(2R)-4-chloro-1-(4-fluorophenyl)-1-oxobutan-2-yl] (3S)-1-(4-ethoxyphenyl)-5-oxopyrrolidine-3-carboxylate ?
user
C23H23ClFNO5
assistant