You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule N'-ethyl-2,2-dimethyl-N'-[(3-propan-2-yl-1,2,4-oxadiazol-5-yl)methyl]propane-1,3-diamine into molecular formula.
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C13H26N4O
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