InChI=1S/C27H32O11/c1-14(6-9-27(2,3)13-36-26-22(31)20(29)21(30)24(38-26)25(32)33)7-10-35-23-15-4-5-19(28)37-18(15)12-17-16(23)8-11-34-17/h4-5,7-8,11-12,20-22,24,26,29-31H,6,9-10,13H2,1-3H3,(H,32,33)/b14-7+