InChI=1S/C20H34O2/c1-14(8-12-21)15-13-17-19(4)10-6-9-18(2,3)16(19)7-11-20(17,5)22-15/h8,15-17,21H,6-7,9-13H2,1-5H3/b14-8+/t15-,16-,17+,19-,20+/m0/s1