You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 1-[4-[[4-(7-chloro-2-methylimidazo[1,2-a]pyridin-3-yl)-1,3-thiazol-2-yl]amino]phenyl]ethanone;hydrobromide is given. What is its corresponding molecular formula?
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C19H16BrClN4OS
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