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 N-(3,4-difluorophenyl)-4-oxo-3-phenyl-2-piperidin-1-yl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine-6-carboxamide .
user
C25H25F2N5O2
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