You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-ethyl-3-[[[N'-methyl-N-[(3-pentan-3-yl-1,2-oxazol-5-yl)methyl]carbamimidoyl]amino]methyl]benzamide;hydroiodide into molecular formula.
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C21H32IN5O2
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