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-methyl-3-thiophen-2-ylpropyl)-3-(3-morpholin-4-ylpropyl)guanidine;hydroiodide using the IUPAC nomenclature.
user
C18H33IN4OS
assistant