InChI=1/C13H11BrN2O5/c1-2-21-9-5-6(4-8(14)10(9)17)3-7-11(18)15-13(20)16-12(7)19/h3-5,17H,2H2,1H3,(H2,15,16,18,19,20)/p-1/fC13H10BrN2O5/h15H/q-1/b7-3- CDC4734C29155B0A