InChI=1S/C20H24O3/c1-13(7-6-8-14(2)11-20(22)23)9-10-18-15(3)12-19(21)17(5)16(18)4/h6-12,21H,1-5H3,(H,22,23)/b8-6+,10-9+,13-7+,14-11+