You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 1-[[1-(4-bromophenyl)pyrrolidin-3-yl]methyl]-3-ethyl-2-[(1,3,5-trimethylpyrazol-4-yl)methyl]guanidine;hydroiodide into molecular formula.
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C21H32BrIN6
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