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 2-[[[2-(7-ethyl-1H-indol-3-yl)ethylamino]-(2-methoxyethylamino)methylidene]amino]-N,N-dimethylacetamide;hydroiodide into molecular formula.
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C20H32IN5O2
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