You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,2R)-N-(1,4-dimethyl-2-oxopyridin-3-yl)-2-pyridin-3-ylcyclopropane-1-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H17N3O2
assistant