1,3,4-oxadiazole, 2,2'-(1,2-ethanediyl)bis[5-methyl- 2,2'-ethane-1,2-diylbis(5-methyl-1,3,4-oxadiazole) InChI=1/C8H10N4O2/c1-5-9-11-7(13-5)3-4-8-12-10-6(2)14-8/h3-4H2,1-2H