You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-ethyl-2-[3-(6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-3-yl)propyl]-3-[1-(1,3,5-trimethylpyrazol-4-yl)propan-2-yl]guanidine;hydroiodide by IUPAC nomenclature, provide its molecular formula.
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C22H39IN8
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