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 N-[[1-(3,4-difluorophenyl)pyrrolidin-3-yl]methyl]-5-(2-fluorophenyl)-1H-pyrazole-4-carboxamide .
user
C21H19F3N4O
assistant