Synonyms: 3bb,6-Methano-3bH-oxireno[3',4']cyclopenta[1',2':3,4]heptaleno[1,2-d]-1,3-dioxole-5,9,11aa(4H)-triol, 3aa,5,6a,7,8,8aa,9,9aa,9bb,10ab,11,11bb-dodecahydro-2,2,5a,9a,11,11-hexamethyl- (8CI);3b,6-Methano-3bH-oxireno[3',4']cyclopenta[1',2':3,4]heptaleno[1,2-d]-1,3-dioxole,grayanotoxane-5,6,7,10,16-pentol deriv.; Deacetyllyoniol A acetonide; LyoniolA, deacetyl-, acetonide; Lyoniol B, acetonide