InChI=1S/C26H26O13/c1-33-16-6-12-15(8-17(16)34-2)36-9-18-26(12,39-25-21(29)19(27)20(28)22(38-25)24(31)32)23(30)11-5-10-3-4-35-13(10)7-14(11)37-18/h3-8,18-23,25,27-30H,9H2,1-2H3,(H,31,32)