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 2-[(5-tert-butyl-1,3-oxazol-2-yl)methyl]-1-[2-(2,5-dimethylfuran-3-yl)-2-hydroxypropyl]-3-ethylguanidine;hydroiodide is given. What is its corresponding molecular formula?
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C20H33IN4O3
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