You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R)-N-[4-(2,3-dimethylphenoxy)phenyl]-1-(4-fluorophenyl)-5-oxopyrrolidine-3-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H23FN2O3
assistant