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 5-chloro-6-[4-[6-(4-fluorophenyl)imidazo[2,1-b][1,3,4]thiadiazol-2-yl]piperazin-1-yl]pyrimidin-4-amine into molecular formula.
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C18H16ClFN8S
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