You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 1-(7,7-dimethyl-2-oxabicyclo[3.2.0]heptan-6-yl)-3-ethyl-2-(5-piperidin-1-ylpentyl)guanidine;hydroiodide is given. What is its corresponding molecular formula?
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C21H41IN4O
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