InChI=1S/C20H28O3/c1-6-12-9-14(21)17-13(11(12)2)7-8-16-19(3,4)18(23)15(22)10-20(16,17)5/h6,9,11,13,16-18,23H,1,7-8,10H2,2-5H3/t11-,13?,16-,17+,18-,20-/m1/s1