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-[2-(3,4-dihydro-2H-quinolin-1-yl)-2-oxoethyl]-2-methyl-3-(2-thiophen-2-ylpropyl)guanidine;hydroiodide .
user
C20H27IN4OS
assistant