7770-31-2 CEVANE-3,4,12,14,16,17,20-HEPTOL, 4,9-EPOXY-, 3-[(2Z)-2-METHYL-2-BUTENOATE], (3B,4A,16B)- 79307-07-6 (3ar,4s,5z,11as)-6,10-dimethyl-3-methylidene-2,9-dioxo-2,3,3a,4,9,10,11,11a-octahydro-7,10-epoxycyclodeca[b]furan-4-yl 3-methyloxirane-2-carboxylate