InChI=1S/C26H28O13/c1-9(2)3-4-10-14(28)7-17-18(19(31)12(8-37-17)11-5-15(29)16(30)6-13(11)27)23(10)38-26-22(34)20(32)21(33)24(39-26)25(35)36/h3,5-7,12,20-22,24,26-30,32-34H,4,8H2,1-2H3,(H,35,36)