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-[[(4S)-2-hydroxy-5-oxoimidazolidin-4-yl]methyl]-N-methyl-4-(4-methylphenoxy)benzenesulfonamide .
user
C18H21N3O5S
assistant