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