You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-(2-cyanophenyl)sulfonyl-N-[1-(3,4-difluorophenyl)-2-(methylamino)-2-oxoethyl]piperidine-4-carboxamide .
user
C22H22F2N4O4S
assistant