You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 3,4-dichloro-N-[2-[(4-oxo-1-phenyl-5H-pyrazolo[3,4-d]pyrimidin-6-yl)amino]ethyl]benzamide using the IUPAC nomenclature.
user
C20H16Cl2N6O2
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