3 5 dibromo 1h 1 2 4 triazole July 8, 2019 16 32 64 128 1 4 dibromobutane 2-bromo-1 3 4-thiadiazole 1 1'-(isopropylidene)bis 3 5-dibromo-4-(2 3-dibromo-2-methylpropoxy)benzene