You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-methyl-1-[2-(3-methylbutoxy)ethyl]-3-[[1-(2-phenylethyl)pyrrolidin-3-yl]methyl]guanidine;hydroiodide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H39IN4O
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