InChI=1S/C30H26O17S/c31-14-4-1-12(7-16(14)33)2-6-23(37)44-11-22-26(38)30(47-48(41,42)43)28(40)29(46-22)25-19(36)10-21-24(27(25)39)18(35)9-20(45-21)13-3-5-15(32)17(34)8-13/h1-10,22,26,28-34,36,38-40H,11H2,(H,41,42,43)/b6-2+