2-Cyano-5-nitro-4-(trifluoromethoxy)pyridine-3-carboxaldehyde
2-Cyano-4-nitro-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
2-Cyano-3-nitro-6-(trifluoromethoxy)pyridine-5-carboxaldehyde
2-Cyano-3-nitro-5-(trifluoromethoxy)pyridine-4-carboxaldehyde
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