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 2-[[1-(2-methylpropyl)pyrrolidin-3-yl]methyl]-1-(oxolan-2-ylmethyl)guanidine;hydroiodide is given. What is its corresponding molecular formula?
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C15H31IN4O
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