You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[3-(benzenesulfonyl)propyl]-3-[[5-chloro-2-(difluoromethoxy)phenyl]methyl]-2-methylguanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H23ClF2IN3O3S
assistant