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-[methyl(thiophen-2-ylmethyl)amino]-2-oxoethyl] 3-methylbenzo[g][1]benzofuran-2-carboxylate using the IUPAC nomenclature.
user
C22H19NO4S
assistant