InChI=1S/C24H15N7O2S/c32-22-17-12-11-16(14-18(17)23(33)27-26-22)30-28-21(13-10-15-6-2-1-3-7-15)29-31(30)24-25-19-8-4-5-9-20(19)34-24/h1-14H,(H,28,29)/p+1/b13-10+