You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[5-[2-[(4-fluorophenyl)methylamino]-2-oxoethyl]sulfanyl-1,3,4-thiadiazol-2-yl]-3,5-dimethylbenzamide into its molecular formula.
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C20H19FN4O2S2
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