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-[(4-cyanophenyl)methyl]-1-ethyl-3-[3-(3-methoxypropoxy)phenyl]guanidine;hydroiodide using the IUPAC nomenclature.
user
C21H27IN4O2
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