Synonyms: 7,9aa-Methano-9aH-cyclopenta[b]heptalene-10(1H)-one,2b,3b-epoxy-2,3,3ab,4,4ab,5,6,7b,8,9,10,11-dodecahydro-4a,8a,11b,11ab-tetrahydroxy-1,1,4,8-tetramethyl-,11-acetate (8CI); 5,7a-Methano-7aH-cyclohept[6,7]azuleno[1,2-b]oxirene,grayanotoxan-7-one deriv.; 7-Ketolyoniol A; Ketolyoniol A