You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-amino-3-(N-methyl-C-phenylcarbonimidoyl)phenyl]-2-(3-chloro-2,6-difluorocyclohexa-1,5-dien-1-yl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H20ClF2N3O
assistant