Synonyms: 7,20-Cycloatidane-11,15-diol,16,17-didehydro-1,19-epoxy-21-ethyl-4-methyl-, (1a,11b,15b,19R)-;2,6-Epoxy-8,10a-ethano-11,3,6a-ethanylylidene-8H-indeno[2,1-b]azocine-7,10-diol,1-ethyldodecahydro-3-methyl-9-methylene-, [2R-(2a,3b,6a,6ab,6bb,7b,8a,10b,10aa,11b,11aa,13S*)]-; Kirinine B