InChI=1S/C33H52O6/c1-19(11-10-12-20(2)29(36)37)23-17-26(35)33(8)28-22(13-16-32(23,33)7)31(6)15-14-27(39-21(3)34)30(4,5)25(31)18-24(28)38-9/h12,19,23-27,35H,10-11,13-18H2,1-9H3,(H,36,37)/b20-12-