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 4-cyano-1-[3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclobutyl]-2H-pyridine-6-sulfonamide .
user
C17H19N7O2S
assistant