InChI=1S/C20H32O2/c1-14(2)17-8-6-15(3)12-18(21)13-16(4)7-9-19-20(5,22-19)11-10-17/h6,8,14,16,19H,7,9-13H2,1-5H3/b15-6-,17-8+/t16-,19-,20-/m0/s1