1,3,4-Oxadiazole,2,2'-[5'-[4-[5-[4-(1,1-dimethylethyl)phenyl]-1,3,4-oxadiazol-2-yl]phenyl][1,1':3',1''-terphenyl]-4,4''-diyl]bis[5-[4-(1,1-dimethylethyl)phenyl]-