1,3,4-oxadiazole, 2,2'-(1,2-ethanediyl)bis[5-(1-methylethyl)- 2,2'-ethane-1,2-diylbis(5-isopropyl-1,3,4-oxadiazole) InChI=1/C12H18N4O2/c1-7(2)11-15-13-9(17-11)5-6-10-14-16-12(18-10)8(3)4/h7-8H,5-6H2,1-4H