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system
Name the molecular formula for the molecule established as N-[(E)-[4-(1,6-dimethylimidazo[1,2-a]pyridin-4-ium-2-yl)phenyl]methylideneamino]-1,3-thiazol-2-amine;bromide using the IUPAC nomenclature.
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C19H18BrN5S
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