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 ethyl (2E)-2-[(2-chlorophenyl)methylidene]-5-methyl-3-oxo-[1,3]thiazolo[2,3-b][1,3]thiazol-4-ium-6-carboxylate;hydrochloride into molecular formula.
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C16H14Cl2NO3S2+
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