Synonyms: Bisindolo[2',3':3,4]pyrido[2,1-a:2',1'-g][2,7]naphthyridine-7-carboxylicacid, 5,5b,6,6a,10,11,16,16b,16c,17,19,20-dodecahydro-16b-methyl-, methylester, (5bS,6aS,16bS,16cR)- (9CI); Roxburghine C (8CI); Roxburghine, (3a)-; 3-Epiroxburghine; Bisindolo[2',3':3,4]pyrido[2,1-a:2',1'-g][2,7]naphthyridine-7-carboxylicacid, 5,5b,6,6a,10,11,16,16b,16c,17,19,20-dodecahydro-16b-methyl-, methylester, [5bS-(5ba,6aa,16ba,16cb)]-; NSC 288729