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 methyl 2-hydroxy-6,6-dimethyl-4-oxo-3-(N-phenyl-C-propylcarbonimidoyl)cyclohex-2-ene-1-carboxylate .
user
C20H25NO4
assistant