InChI=1S/C26H30O13/c1-11(10-27)2-6-14-17(31)9-18(38-26-23(35)21(33)22(34)24(39-26)25(36)37)19(20(14)32)15(29)7-4-12-3-5-13(28)8-16(12)30/h2-3,5,8-9,21-24,26-28,30-35H,4,6-7,10H2,1H3,(H,36,37)/b11-2+