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For the molecule named 1-ethyl-3-[[3-(4-methoxyphenyl)-1H-1,2,4-triazol-5-yl]methyl]-2-[(1,3,5-trimethylpyrazol-4-yl)methyl]guanidine;hydroiodide by IUPAC nomenclature, provide its molecular formula.
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C20H29IN8O
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