You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 4-[1-(azepan-1-yl)-2-[[4-(trifluoromethyl)phenyl]sulfonylamino]ethyl]benzenesulfonamide using the IUPAC nomenclature.
user
C21H26F3N3O4S2
assistant