You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[[3-bromo-5-chloro-4-[(2-fluorophenyl)methoxy]phenyl]methylideneamino]-3-ethylthiourea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H16BrClFN3OS
assistant