英文别名5-METHYL-[1,3,4]OXADIAZOLE-2-CARBOXYLIC ACID ETHYL ESTER; 1,3,4-Oxadiazole-2-carboxylic acid, 5-Methyl-, ethyl ester; 2-carboxyethyl-5-Methyl-1,3,4-oxadiazole; 5-Methyl-1,3,4-oxadiazole-2-carboxylic ethyl ester; 1,3,4-Oxadiazole-2-carboxylic acid,5-methyl-,ethyl ester