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-[3-(1H-benzimidazol-2-yl)propyl]-3-ethyl-2-[(3-fluorophenyl)methyl]guanidine;hydroiodide using the IUPAC nomenclature.
user
C20H25FIN5
assistant