You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 3-[(2,5-dimethylphenyl)methyl]-1-methyl-9-(4-methylphenyl)-6,7,8,9a,10,10a-hexahydro-4aH-purino[7,8-a]pyrimidine-2,4-dione into its molecular formula.
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C25H31N5O2
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