You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-[[(1R,2R)-2-(2,3-difluorophenyl)cyclopropanecarbonyl]-methylamino]acetyl]piperidine-4-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H22F2N2O4
assistant