Synonyms: 6,21-Cyclo-4,5-secoakuammilan-17-oicacid, 4,5-epoxy-5-hydroxy-, methyl ester, (5S,6a)-;2,3,6a-(Epoxyethanylylidene)-1,5-methano-1H-azocino[3,4-b]indole-6-carboxylicacid, 4-ethylidene-3,4,5,6-tetrahydro-13-hydroxy-, methyl ester, [1S-(1a,2b,3b,4E,5a,6b,6ab,12R*,13R*)]-; Nareline