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-[4-[2-(dimethylcarbamoylamino)pyridin-4-yl]oxyphenyl]-2,2-difluoro-N'-(4-fluorophenyl)propanediamide .
user
C23H20F3N5O4
assistant