InChI=1/C18H16N4O4/c1-26-12-7-8-14-13(9-12)15(23)22(21-14)10-18(11-5-3-2-4-6-11)16(24)19-17(25)20-18/h2-9,21H,10H2,1H3,(H2,19,20,24,25)/p-1/t18-/m1/s1/fC18H15N4O4/h20H/q-1 F7D6E7FE8FC1C94A