Synonyms: 12,24-Secostrychnidin-10-one,12,13-didehydro-2,3-dimethoxy-; (-)-Isobrucine;12H-1,12-Ethano-9H-pyrido[1,2,3-lm]pyrrolo[2,3-d]carbazol-9-one,2,3,10,11b,13,13a-hexahydro-14-(2-hydroxyethylidene)-5,6-dimethoxy-,[11bS-(3aS*,11ba,12a,13ab)]-; Isobrucine