InChI=1S/C20H32O/c1-7-18(4)12-10-17-19(5,11-8-9-14(2)3)15-13-16(15)20(17,6)21-18/h7,9,15-17H,1,8,10-13H2,2-6H3/t15-,16+,17-,18-,19-,20+/m1/s1