InChI=1/C23H16N4O4/c28-18-7-3-2-6-16(18)20-25-22-17(13-15-5-1-4-8-19(15)31-22)23(30)27(20)26-21(29)14-9-11-24-12-10-14/h1-13,20,28H,(H,26,29)/t20-/m1/s1/f/h26H BD6D898F462F1A9B