You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(1S)-1-(2,4-dimethylphenyl)ethyl]-2-(6-fluoro-4-oxo-1,2,3-benzotriazin-3-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H19FN4O2
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