You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2-carbamoyl-5,7-difluoro-1-benzofuran-3-yl)-3-pyridin-4-ylpyrrolidine-1-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H16F2N4O3
assistant