18555-88-9

6H,13aH-3a,5a-Ethano-1H-indolizino[8,1-cd]- carbazole-5,6-dicarboxylic acid,4,5,11,12-tetrahydro-4,5-dihydroxy-,dimethyl ester,(3aS,4S,5S,5aR,10bS,13R,13aS)-