InChI=1S/C20H32/c1-7-19(5)11-12-20(6)14(2)16(19)13-17-15(20)9-8-10-18(17,3)4/h7,13-16H,1,8-12H2,2-6H3/t14-,15+,16+,19?,20+/m0/s1