You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-ethyl-2-[2-(5-ethyl-1,3-thiazol-2-yl)ethyl]-3-[2-(2-methylphenyl)cyclopropyl]guanidine;hydroiodide into its molecular formula.
user
C20H29IN4S
assistant