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-[(2-chlorophenyl)methyl]-6-hydroxy-4-methyl-2-oxo-5-[2-(2,3,4,5,6-pentachlorophenoxy)acetyl]pyridine-3-carbonitrile .
user
C22H12Cl6N2O4
assistant