InChI=1S/C28H38O9/c1-20(10-8-12-26(17-35-23(4)30)13-14-34-22(3)29)9-7-11-21(2)15-28(33)16-27(18-36-24(5)31)19-37-25(6)32/h10-11,13-14,17-18H,7-9,12,15-16,19H2,1-6H3/b14-13+,20-10+,21-11+,26-17+,27-18+