InChI=1S/C26H28O13/c1-35-16-9-12(4-5-15(16)37-26-21(32)19(30)20(31)24(39-26)25(33)34)22-14(10-27)13-7-11(3-6-18(28)29)8-17(36-2)23(13)38-22/h3-9,14,19-22,24,26-27,30-32H,10H2,1-2H3,(H,28,29)(H,33,34)/b6-3+