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 5-[2-(4-ethylsulfonyl-1,4-diazepan-1-yl)-2-oxoethyl]-1,3-dihydrobenzimidazol-2-one .
user
C16H22N4O4S
assistant