You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-ethyl-2-[[6-(2-methylmorpholin-4-yl)pyridin-3-yl]methyl]-3-(2-pyrrol-1-ylethyl)guanidine;hydroiodide .
user
C20H31IN6O
assistant