InChI=1S/C26H28O6/c1-14-6-5-9-26(2,3)17(14)11-16-22(31-4)13-23-24(25(16)30)20(29)12-21(32-23)15-7-8-18(27)19(28)10-15/h7-8,10,12-13,17,27-28,30H,1,5-6,9,11H2,2-4H3