Ethyl 2,6-diamino-4-(trifluoromethoxy)pyridine-3-acetate
Ethyl 2,6-diamino-3-(trifluoromethoxy)pyridine-5-acetate
Ethyl 2,6-diamino-3-(trifluoromethoxy)pyridine-4-acetate
Ethyl 3,6-diamino-2-(trifluoromethoxy)pyridine-5-acetate
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