You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[4-(3-oxo-3-pyridin-3-ylprop-1-enyl)phenyl]-1-pyridin-3-ylprop-2-en-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H16N2O2
assistant