InChI=1S/C28H42O2/c1-17(2)18(3)7-8-19(4)22-9-10-23-26-24(12-14-28(22,23)6)27(5)13-11-21(29)15-20(27)16-25(26)30/h7-8,16-19,21-23,29H,9-15H2,1-6H3/b8-7+