(1aR,2aS,3aS,4R,5aR,9aR)-1a,4,8-trimethyl-2,2a,5,5a-tetrahydro-1aH,4H-bisoxireno[1,8a:3,3a]azuleno[6,5-b]furan-7(9H)-one 1aH,4H-bisoxireno[1,8a:3,3a]azuleno[6,5-b]furan-7(9H)-one, 2,2a,5,5a-tetrahydro-1a,4,8-trimethyl-, (1aR,2aS,3aS,4R,5aR,9aR)- InChI=1/C15H18O4/c1-7-4-10-9(8(2)12(16)17-10)5-14-13(3,19-14)6-11-15(7,14)18-11/h7,10-11H,4-6H2,1-3H3/t7-,10-,11+,13-,14-,15+/m1/s