InChI=1S/C26H30O17S/c27-10-16-17(28)18(29)21(32)25(41-16)40-14-7-12(8-15(9-14)43-44(36,37)38)2-1-11-3-5-13(6-4-11)39-26-22(33)19(30)20(31)23(42-26)24(34)35/h1-9,16-23,25-33H,10H2,(H,34,35)(H,36,37,38)/b2-1+