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 3-[(3-benzyl-1,2,4-oxadiazol-5-yl)methyl]-5-methyl-5-(2-methylpropyl)imidazolidine-2,4-dione is given. What is its corresponding molecular formula?
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C18H22N4O3
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