You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,2R)-2-[(1,4-dimethyl-6-oxopyridin-3-yl)carbamoyl]cyclopropane-1-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C12H14N2O4
assistant