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The title compound N-tert-butyl-N-(4-methyl-1,2,3-thiadiazole)-5-yl-N’-(4-me-thyl-1,2,3-thiadiazole)-5-formyl-N’-3,5-dichloropyrid-2-yl-diacylhydrazines (C18H17Cl2N7O3S2, Mr = 514.41) has been synthesized by the reaction of N-tert-butyl-N’-3,6-dichloropyr