You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-(1,3-benzothiazol-2-ylmethyl)-1-(4-fluorophenyl)-3-methylthieno[2,3-c]pyrazole-5-carboxamide into its molecular formula.
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C21H15FN4OS2
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