(1aS,4E,8E,10aR,13aS,14aS)-1a,5,9-trimethyl-13-methylene-2,3,6,7,10,10a,13,13a,14,14a-decahydrooxireno[4,5]cyclotetradeca[1,2-b]furan-12(1aH)-one InChI=1/C20H28O3/c1-13-7-5-8-14(2)11-17-16(15(3)19(21)22-17)12-18-20(4,23-18)10-6-9-13/h8-9,16-18H,3,5-7,10-12H2,1-2,4H3/b13-9+,14-8+/t16-,17+,18-,20-/m0/s oxireno[4,5]cyclotetradeca[1,2-b]furan-12(1aH)-one, 2,3,6,7,10,10a,13,13a,14,14a-decahydro-1a,5,9-trimethyl-13-methylene-, (1aS,4E,8E,10aR,13aS,14aS)-