You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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2-methyl-2-[[2-oxo-2-[(5-propan-2-yl-1,3,4-oxadiazol-2-yl)amino]ethyl]amino]propanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
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C11H18N4O4
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