You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2-ethyl-2-phenylbutyl)-2-methyl-3-[2-(4-methyl-1,4-diazepan-1-yl)ethyl]guanidine;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H40IN5
assistant