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 3-[4-(5-methylthiophen-2-yl)sulfonylpiperazin-1-yl]-N-(3-nitrophenyl)propanamide using the IUPAC nomenclature.
user
C18H22N4O5S2
assistant