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 ethyl (1E)-N-[3-cyano-6-fluoro-4-(4-methoxyphenyl)-4H-[1]benzothiolo[3,2-b]pyran-2-yl]methanimidate .
user
C22H17FN2O3S
assistant