InChI=1/C15H12BrNO4/c16-9-1-3-10(4-2-9)17-15(14(19)20)8-21-13-7-11(18)5-6-12(13)15/h1-7,17-18H,8H2,(H,19,20)/p-1/t15-/m1/s1/fC15H11BrNO4/q-1 D619DC3780E82E97