You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[4-(4-acetamido-2-fluorophenyl)-1,3-thiazol-2-yl]-2-methyl-1,3-dioxoisoindole-5-carboxamide into its molecular formula.
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C21H15FN4O4S
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