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-methyl-4-methylsulfonylphenyl)methyl]-3-(2-quinolin-8-ylethyl)guanidine;hydroiodide by IUPAC nomenclature, provide its molecular formula.
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C23H29IN4O2S
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