You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[[1-(2-methoxyethyl)cyclobutyl]methyl]-2-methyl-3-[[2-[(2-oxopyrrolidin-1-yl)methyl]phenyl]methyl]guanidine;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H35IN4O2
assistant