InChI=1/C18H16N2O4/c1-10-6-7-15-14(8-10)17(21)20-16(19-15)12-4-3-5-13(9-12)24-11(2)18(22)23/h3-9,11H,1-2H3,(H,22,23)(H,19,20,21)/p-1/t11-/m1/s1/fC18H15N2O4/h20H/q-1 4454183E8CFBAEBE