InChI=1S/C23H32O17/c1-3-7-8(4-11(25)26)9(20(34)35-2)6-36-21(7)40-22-16(31)14(29)17(10(5-24)37-22)38-23-15(30)12(27)13(28)18(39-23)19(32)33/h3,6,8,10,12-18,21-24,27-31H,4-5H2,1-2H3,(H,25,26)(H,32,33)/b7-3-