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 9-methyl-2-propan-2-yl-6-[(2-pyridin-4-ylphenyl)methyl]-3,4-dihydropyrazino[1,2-c]pyrimidine-1,8-dione is given. What is its corresponding molecular formula?
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C23H24N4O2
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