You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-(5-ethoxy-2-methyl-2,3-dihydro-1-benzofuran-6-yl)-2-[4-(trifluoromethoxy)anilino]acetamide .
user
C20H21F3N2O4
assistant