You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-(4-fluoro-1,3-benzoxazol-2-yl)-1-(3-fluorothiophene-2-carbonyl)-1,4,7-triazecan-8-one into its molecular formula.
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C19H18F2N4O3S
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