3-Chloro-2,5,6-trifluoro-4-(pyridin-3-yl)pyridine
3-Chloro-2-fluoro-5-(pyridin-4-yl)pyridine
3-Chloro-2-fluoro-5-(pyridin-3-yl)pyridine
2-Chloro-3-fluoro-5-(pyridin-4-yl)pyridine
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