(1aR,4E,8E,9aR,14aR)-4,8,12,14a-tetramethyl-1a,2,3,6,7,9a,11,13,14,14a-decahydrooxireno[5,6]cyclotetradeca[1,2-b]furan InChI=1/C20H30O2/c1-14-6-5-7-15(2)12-18-17(16(3)13-21-18)10-11-20(4)19(22-20)9-8-14/h6,12,18-19H,5,7-11,13H2,1-4H3/b14-6+,15-12+/t18-,19-,20-/m1/s oxireno[5,6]cyclotetradeca[1,2-b]furan, 1a,2,3,6,7,9a,11,13,14,14a-decahydro-4,8,12,14a-tetramethyl-, (1aR,4E,8E,9aR,14aR)-