You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(4-tert-butylphenyl)-4-[3-(dibutylamino)propylamino]-6H-pyrazolo[1,5-a][1,3,5]triazin-7-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H40N6O
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