You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 1-[2-[3-(4-chlorophenyl)-1,2,4-oxadiazol-5-yl]ethyl]-2-methyl-3-[[4-(trifluoromethyl)phenyl]methyl]guanidine;hydroiodide is given. What is its corresponding molecular formula?
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C20H20ClF3IN5O
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