InChI=1S/C26H28O13/c1-10(9-27)2-4-13-17(38-26-23(34)21(32)22(33)24(39-26)25(35)36)8-18-19(20(13)31)15(30)7-16(37-18)12-5-3-11(28)6-14(12)29/h2-3,5-6,8,16,21-24,26-29,31-34H,4,7,9H2,1H3,(H,35,36)/b10-2+