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 2-[4-[(2-oxo-1,3-dihydrobenzimidazol-5-yl)sulfonyl]piperazin-1-yl]acetonitrile using the IUPAC nomenclature.
user
C13H15N5O3S
assistant