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system
Name the molecular formula for the molecule established as (2Z)-2-[(6,7-dichloro-5-oxo-4H-thiochromeno[4,3-d][1,3]thiazol-2-yl)hydrazinylidene]-3-(2-nitrophenyl)propanoic acid using the IUPAC nomenclature.
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C19H12Cl2N4O5S2
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