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 N-[2-[5-(2-fluorophenyl)-3-(4-fluorophenyl)-3,4-dihydropyrazol-2-yl]-2-oxoethyl]-N,2-dimethylpropanamide ?
user
C22H23F2N3O2
assistant