InChI=1S/C28H20N4O8S2/c33-23-12-10-22(11-13-23)30-29-20-6-1-17(2-7-20)18-3-8-21(9-4-18)31-32-28-25(34)14-5-19-15-24(41(35,36)37)16-26(27(19)28)42(38,39)40/h1-16,29,31H,(H,35,36,37)(H,38,39,40)/b32-28+