Synonyms: 7,20-Cycloatidane-1,13,15-triol,16,17-epoxy-4,21-dimethyl-, (1a,13S,15b)-;Gomandonine;Spiro[8,10a-ethano-11,3,6a-ethanylylidene-8H-indeno[2,1-b]azocine-9(10H),2'-oxirane]-6,10,15-triol,decahydro-1,3-dimethyl-, [3R-(3a,6b,6aa,6ba,8b,9b,10a,10ab,11a,11ab,13R*,15R*)]-