You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[(3R)-3-(5-amino-7-methoxy-[1,2,4]triazolo[1,5-c]quinazolin-2-yl)piperidin-1-yl]-1-propan-2-ylpyridin-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H27N7O2
assistant