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-(1-butylpiperidin-4-yl)-3-[2-(furan-2-yl)ethyl]-2-(oxan-2-ylmethyl)guanidine is given. What is its corresponding molecular formula?
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C22H38N4O2
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