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 methyl 1-[N-ethyl-N'-[(5-methoxy-2-methyl-2,3-dihydro-1-benzofuran-6-yl)methyl]carbamimidoyl]piperidine-4-carboxylate .
user
C21H31N3O4
assistant