You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(1-adamantyl)-N-[7-(pyrazine-2-carbonyl)-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-4-yl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H28N6O2
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