You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 1-[2-(3,4-dimethoxyphenyl)ethyl]-3-ethyl-2-[2-hydroxy-2-(5-methylfuran-2-yl)propyl]guanidine;hydroiodide ?
user
C21H32IN3O4
assistant