154889-68-6 Benzo(1,2-b:4,3-b')dipyrrole-1-carboxylic acid, 8-(bromomethyl)-3,6,7,8-tetrahydro-2-methyl-4-(((4-methyl-1-piperazinyl)carbonyl)oxy)-6-((5,6,7-trimethoxy-1H-indol-2-yl)carbonyl)-, methyl ester, (S)- KW 2189 Methyl(1S)-1-bromomethyl-7-methyl-5-((4-methylpiperazinyl)carbonyloxy)-3-((5,6,7-trimethoxy-2-indolyl)carbonyl)-1,2-dihydro-3H-pyrrolo(3,2-e)indole-8-carboxylate hydrobromide