You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[(1-ethylpiperidin-2-yl)methyl]-3-[1-[(3-fluoro-4-methoxyphenyl)methyl]piperidin-4-yl]-2-methylguanidine;hydroiodide into molecular formula.
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C23H39FIN5O
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