InChI=1S/C20H30/c1-14(2)7-6-8-16(4)19-12-10-17(5)18-11-9-15(3)13-20(18)19/h7,9,11,13,16-17,19H,6,8,10,12H2,1-5H3/t16-,17-,19+/m0/s1