You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as N-(2-chloro-4-fluorophenyl)-3-(dimethylamino)-N-[[2-fluoro-4-(hydrazinecarbonyl)phenyl]methyl]pyrrolidine-1-carboxamide using the IUPAC nomenclature.
user
C21H24ClF2N5O2
assistant