You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(4,5-dimethyl-1,2,4-triazol-3-yl)methyl]-1-[(1-ethylpyrrolidin-2-yl)methyl]-3-(3-morpholin-4-ylpropyl)guanidine;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H39IN8O
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