You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-chloro-8-[3-(2-propan-2-ylpyridin-4-yl)propylamino]-2H-[1,2,4]triazolo[4,3-a]pyridin-3-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H20ClN5O
assistant