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 5-(3,4-difluorophenyl)-3-[(2-methoxy-5-methylphenyl)methyl]-5-methylimidazolidine-2,4-dione .
user
C19H18F2N2O3
assistant