You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[5-(2,4-difluorophenyl)-1,2-oxazol-3-yl]-N-(2,4-dimethylphenyl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H16F2N2O2
assistant