You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 6-chloro-2-[(Z)-1-chloro-2-(4-propan-2-ylphenyl)ethenyl]-3H-quinazolin-4-one using the IUPAC nomenclature.
user
C19H16Cl2N2O
assistant