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