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-[3-[(1E)-1-(3,8-difluoro-6H-benzo[c][1]benzoxepin-11-ylidene)ethyl]phenyl]methanesulfonamide .
user
C23H19F2NO3S
assistant