InChI=1S/C16H12N4O10S2/c17-10-6-9(31(25,26)27)3-7-4-13(32(28,29)30)15(16(22)14(7)10)19-18-11-5-8(20(23)24)1-2-12(11)21/h1-6,18,21H,17H2,(H,25,26,27)(H,28,29,30)/b19-15-