InChI=1/C20H17BrN4O4S/c1-22-20-25(23-8-11-5-13(21)19(27)17(6-11)28-2)15(10-30-20)12-3-4-16-14(7-12)24-18(26)9-29-16/h3-8,10H,9H2,1-2H3,(H2,23,24,26,27)/p+1/fC20H18BrN4O4S/h22,24,27H/q+1/b23-8- BAF42072E4CA9223