(1aR,3S,4R,4aR,8aR,9aS)-8a-hydroxy-4,4a,6-trimethyl-7-oxo-2,3,4,4a,5,7,8a,9-octahydro-1aH-oxireno[8,8a]naphtho[2,3-b]furan-3-yl rel-3-methylbut-2-enoate 2-butenoic acid, 3-methyl-, (1aR,3S,4R,4aR,8aR,9aS)-1a,2,4,4a,5,7,8a,9-octahydro-8a-hydroxy-4,4a,6-trimethyl-7-oxo-3H-oxireno[8,8a]naphtho[2,3-b]furan-3-yl ester 3beta-Senecioyloxy-1beta,10beta-epoxy-8alpha-hydroxyeremophil-7(11)-en-8beta(12)-olide InChI=1/C20H26O6/c1-10(2)6-16(21)24-14-7-15-19(25-15)9-20(23)13(11(3)17(22)26-20)8-18(19,5)12(14)4/h6,12,14-15,23H,7-9H2,1-5H3/t12-,14-,15+,18+,19+,20+/m0/s