InChI=1S/C27H28O17/c1-39-13-5-9(28)6-14-15(13)17(32)23(43-26-20(35)16(31)11(30)7-40-26)22(41-14)8-2-3-10(29)12(4-8)42-27-21(36)18(33)19(34)24(44-27)25(37)38/h2-6,11,16,18-21,24,26-31,33-36H,7H2,1H3,(H,37,38)