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-[1-(4-chloro-2-methylphenyl)-3-(5-methyl-6-oxo-1H-pyridin-3-yl)-3-oxopropyl]benzoic acid .
user
C23H20ClNO4
assistant