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 1,7-dimethyl-3-[(2-methylphenyl)methyl]-5-(piperidine-1-carbonyl)pyrido[2,3-d]pyrimidine-2,4-dione .
user
C23H26N4O3
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