You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-(furan-2-yl)-2-pyrrolidin-1-ylethyl]-3-(3-methylsulfanylpropyl)-2-[(4-nitrophenyl)methyl]guanidine;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H32IN5O3S
assistant