You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name N-[5-[(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)sulfamoyl]-1,3,4-thiadiazol-2-yl]-4-methylbenzamide into its molecular formula.
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C21H20N6O4S2
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