You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[4-(4-bromophenyl)-3-methyl-6-oxo-1-phenyl-5,7-dihydro-4H-pyrazolo[3,4-b]pyridin-5-yl]benzamide .
user
C26H21BrN4O2
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