You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 2-fluoro-N,N-dimethyl-4-[5-(2-methylpiperazin-1-yl)-1,3,4-thiadiazol-2-yl]benzamide;hydrochloride into molecular formula.
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C16H21ClFN5OS
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