InChI=1S/C28H42O3/c1-16(2)17(3)7-8-18(4)20-9-10-21-23-22(12-13-26(20,21)5)27(6)14-11-19(29)15-28(27)25(31-28)24(23)30/h7-8,10,16-20,24-25,29-30H,9,11-15H2,1-6H3/b8-7+