InChI=1S/C27H32O7/c1-16(2)20(28)9-12-27-14-19(26(3,33-15-27)11-10-23(27)30)24-21(29)13-22(34-25(24)31)17-5-7-18(32-4)8-6-17/h5-8,13,16,19,29H,9-12,14-15H2,1-4H3