InChI=1S/C20H28O3/c1-14(8-6-13-20(5)17(23-20)18(21)22)10-11-16-15(2)9-7-12-19(16,3)4/h6,8,10-11,13,17H,7,9,12H2,1-5H3,(H,21,22)/b11-10+,13-6+,14-8-