You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[[3-(difluoromethoxy)phenyl]methyl]-2-methyl-3-(1-propan-2-ylpiperidin-4-yl)guanidine;hydroiodide into its molecular formula.
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C18H29F2IN4O
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