InChI=1S/C20H34O2/c1-6-15(2)8-9-17-19(4)12-7-11-18(3,14-21)16(19)10-13-20(17,5)22/h6,16-17,21-22H,1-2,7-14H2,3-5H3/t16-,17+,18-,19-,20+/m1/s1