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 5-methoxy-1,2-dimethyl-3-[(4-nitrophenoxy)-thiophen-2-ylmethyl]indole-4,7-dione using the IUPAC nomenclature.
user
C22H18N2O6S
assistant