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-(6,7-dimethyl-1-benzofuran-3-yl)-1-[4-[(3S)-1,1-dioxothiolan-3-yl]piperazin-1-yl]ethanone using the IUPAC nomenclature.
user
C20H26N2O4S
assistant