InChI=1/C20H24O2/c1-19-7-5-17-15(6-9-22-17)16(19)4-8-20-10-13(2-3-18(19)20)14(11-20)12-21/h5-7,9,11,13,16,18,21H,2-4,8,10,12H2,1H3