You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(2-methyl-1,3-thiazol-4-yl)-N-(3-propan-2-yl-[1,2,4]triazolo[4,3-a]pyridin-6-yl)butanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H21N5OS
assistant