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-dimethyl-N-[2-(4-methylpiperazin-1-yl)-2-thiophen-2-ylethyl]benzenesulfonamide using the IUPAC nomenclature.
user
C19H27N3O2S2
assistant