(5xi,8alpha,9beta,10alpha,11beta,16beta)-11-hydroxykaurane-3,15-dione 11beta-Hydroxy-3,15-dioxo-ent-(16S)-kaurane 2(5H)-furanone, 5,5'-[iminodi(1Z)-4-butyl-1-ylidene]bis[3-methyl-, (5Z,5'Z)- InChI=1/C20H30O3/c1-11-12-9-13(21)16-19(4)7-6-15(22)18(2,3)14(19)5-8-20(16,10-12)17(11)23/h11-14,16,21H,5-10H2,1-4H3/t11-,12?,13+,14?,16+,19-,20-/m1/s