InChI=1S/C23H38O8/c1-7-23(6,28)10-8-9-15(4)12-17(11-14(2)3)30-22-21(29-16(5)25)20(27)19(26)18(13-24)31-22/h7,9,11,17-22,24,26-28H,1,8,10,12-13H2,2-6H3