InChI=1S/C27H28O18/c28-5-14-17(33)19(35)21(37)24(43-14)16-13(44-27-23(39)20(36)22(38)25(45-27)26(40)41)4-12-15(18(16)34)10(32)3-11(42-12)6-1-8(30)9(31)2-7(6)29/h1-4,14,17,19-25,27-31,33-39H,5H2,(H,40,41)