You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance [4-[(5Z)-5-[[4-(dimethylamino)phenyl]methylidene]-4-methyl-3,6-dioxo-7H-pyrazolo[3,4-b]pyridin-2-yl]phenyl] formate .
user
C23H20N4O4
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