InChI=1S/C31H52O9/c1-16(9-10-29(40,15-32)25(2,3)39)23-17(33)12-26(4)18-7-8-19-28(6,24(37)38)20(34)11-21(35)31(19)14-30(18,31)22(36)13-27(23,26)5/h16-23,32-36,39-40H,7-15H2,1-6H3,(H,37,38)