InChI=1S/C27H20N4O9S2/c32-14-15-13-22(30-28-20-9-11-23(41(35,36)37)18-7-3-1-5-16(18)20)27(34)25(26(15)33)31-29-21-10-12-24(42(38,39)40)19-8-4-2-6-17(19)21/h1-13,32-34H,14H2,(H,35,36,37)(H,38,39,40)/b30-28+,31-29+