1 7 dibromo 3 4 9 10 perylenetetracarboxylic dianhydride July 8, 2019 16 32 64 128 1 4 dibromobutane 7 7-dibromo 4.1.0 heptane 1 1'-(isopropylidene)bis 3 5-dibromo-4-(2 3-dibromo-2-methylpropoxy)benzene
