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-1-[[2-(2-methylpropoxy)phenyl]methyl]-3-[3-(oxolan-2-ylmethoxy)propyl]guanidine using the IUPAC nomenclature.
user
C21H35N3O3
assistant