You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[1-[1-(imidazo[1,2-a]pyridin-2-ylmethyl)pyrrolidin-3-yl]pyrazol-4-yl]pyrrolidin-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H22N6O
assistant