You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N'-methyl-3-morpholin-4-yl-N-[4-(2-oxopyridin-1-yl)butyl]pyrrolidine-1-carboximidamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H31N5O2
assistant