You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-ethyl-4-(oxolane-2-carbonyl)-N'-(5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-2-ylmethyl)piperazine-1-carboximidamide;hydroiodide by IUPAC nomenclature, provide its molecular formula.
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C20H33IN6O2
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