You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[[2-(azepan-1-yl)pyridin-4-yl]methyl]-1-ethyl-3-[1-(2-methylpropanoyl)pyrrolidin-3-yl]guanidine;hydroiodide into molecular formula.
user
C23H39IN6O
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