1H-Pyrazolo[1,5-b][1,2,4]triazole, 6-(1,1-dimethylethyl)-7-[[5-(1,1-dimethylethyl)-2-(hexyloxy)phenyl]thio]-2- [4-[(5-ethyl-1,3,4-oxadiazol-2-yl)thio]-3-nitrophenyl]-