6-(4-Nitrophenyl)-2-(3,4,5-trimethoxyphenyl)imidazo(2,1-b)-1,3,4-thiadiazole 91918-56-8 Imidazo(2,1-b)-1,3,4-thiadiazole, 6-(4-nitrophenyl)-2-(3,4,5-trimethoxyphenyl)-