You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 6-bromo-2-[(2S)-butan-2-yl]-3-[[5-chloro-2-[(3-fluorophenyl)methoxy]-3-methoxyphenyl]methylideneamino]quinazolin-4-one .
user
C27H24BrClFN3O3
assistant