InChI=1S/C33H52O7/c1-18(19(2)29(5,6)39-21(4)35)28(38-20(3)34)32(9)33(40-32)27(37)17-26-24-11-10-22-16-23(36)12-14-30(22,7)25(24)13-15-31(26,33)8/h18-19,22,24-28,37H,10-17H2,1-9H3