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 N-[4-[(E)-3-(4-methylpiperazin-1-yl)-3-oxoprop-1-enyl]phenyl]methanesulfonamide using the IUPAC nomenclature.
user
C15H21N3O3S
assistant