InChI=1S/C26H28O13/c1-11(10-27)2-6-14-17(30)9-18(31)19(20(14)32)15(28)7-4-12-3-5-13(8-16(12)29)38-26-23(35)21(33)22(34)24(39-26)25(36)37/h2-5,7-9,21-24,26-27,29-35H,6,10H2,1H3,(H,36,37)/b7-4?,11-2+