InChI=1/C27H30O17/c1-7-16(32)20(36)22(38)26(41-7)40-6-14-18(34)21(37)23(39)27(43-14)44-25-19(35)15-10(29)4-9(28)5-13(15)42-24(25)8-2-11(30)17(33)12(31)3-8/h2-5,7,14,16,18,20-23,26-34,36-39H,6H2,1H3