You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name N-[2-[[N-ethyl-N'-[(3-methoxy-4-propoxyphenyl)methyl]carbamimidoyl]amino]ethyl]cyclopropanecarboxamide;hydroiodide into its molecular formula.
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C20H33IN4O3
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