methyl 6-(aminocarbonyl)-3,6,7,8-tetrahydro-4,5-dimethoxybenzo[1,2-b:4,3-b']dipyrrole-2-carboxylate

5,8-dibromo-2-(o-nitrobenzenesulfonyl)-1,2,3,4-tetrahydro-6,7-dimethoxy-1-hydroxyisoquinoline