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 1-ethyl-2-[2-hydroxy-2-(5-methylfuran-2-yl)propyl]-3-[3-(3-methoxyphenoxy)propyl]guanidine using the IUPAC nomenclature.
user
C21H31N3O4
assistant