InChI=1S/C27H28O17/c28-7-13-15(30)17(32)21(36)27(43-13)42-12-6-9(29)5-11-14(12)16(31)19(34)23(41-11)8-1-3-10(4-2-8)40-26-22(37)18(33)20(35)24(44-26)25(38)39/h1-6,13,15,17-18,20-22,24,26-30,32-37H,7H2,(H,38,39)