You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-[[3-[[2-(fluoromethyl)phenyl]sulfonylamino]-1,2,4-benzotriazin-7-yl]oxy]-N-methylpyridine-2-carboxamide into its molecular formula.
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C21H17FN6O4S
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