You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 4-[5-(2-chloro-6-fluoroanilino)-6-methylpyrazolo[3,4-b]pyridin-1-yl]-N-(oxetan-3-yl)thiophene-2-carboxamide ?
user
C21H17ClFN5O2S
assistant