You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-(3-chlorophenoxy)propyl]-3-ethyl-2-[[3-(2-hydroxyethyl)oxolan-3-yl]methyl]guanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H31ClIN3O3
assistant