You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[5-(2-fluoro-4-methoxyphenyl)-1H-1,2,4-triazol-3-yl]-2-methyl-4-(oxan-4-yl)butanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H25FN4O3
assistant