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