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 (4S,4aR,5S,8aS)-1,3,5,6,8-pentamethyl-4-phenyl-4,4a,5,8a-tetrahydropyrimido[4,5-d]pyrimidine-2,7-dione is given. What is its corresponding molecular formula?
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C17H24N4O2
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