You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[4-(2-adamantylmethylamino)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-7-yl]-2-[butyl(methyl)amino]ethanone into molecular formula.
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C25H39N5O
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