ethyl 3-pyridin-4-yl-1,2,4-oxadiazole-5-carboxylate

Ethyl 3-pyridin-3-yl-[1,2,4]oxadiazole-5-carboxylate

3-(Pyridin-3-yl)-1,2,4-oxadiazole-5-carboxylic acid ethyl ester