InChI=1S/C20H22N8O4/c1-28-9-21-18(27-28)12-4-3-5-13(17(12)32-2)23-14-8-15(24-19(30)11-6-7-11)25-26-16(14)20(31)22-10-29/h3-5,8-9,11,29H,6-7,10H2,1-2H3,(H,22,31)(H2,23,24,25,30)/i10D2