InChI=1S/C20H30O/c1-12(2)16-8-6-13(3)17-9-7-15(5)20(17)11-19(21)14(4)10-18(16)20/h10,12,15-18H,3,6-9,11H2,1-2,4-5H3/t15?,16-,17?,18-,20-/m1/s1