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 (5R)-5-methyl-3-[(Z)-(2-methylphenyl)methylideneamino]-5-phenylimidazolidine-2,4-dione is given. What is its corresponding molecular formula?
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C18H17N3O2
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