4-Cyano-6-nitro-2-(trifluoromethoxy)pyridine-3-sulfonamide
4-Cyano-2-nitro-5-(trifluoromethoxy)pyridine-3-sulfonamide
4-Chloro-2-(difluoromethyl)-3-methoxy-5-(trifluoromethoxy)pyridine
5-Cyano-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonamide
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