You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 1-[2-chloro-4-(N-(5-methoxy-2,3-dihydro-[1,4]dioxino[2,3-f]quinazolin-10-yl)anilino)phenyl]-3-(3-methylsulfonylphenyl)urea ?
user
C31H26ClN5O6S
assistant