InChI=1/C20H20N4O4/c1-3-28-18-6-4-5-14(19(18)25)12-21-24-20(26)17-11-16(22-23-17)13-7-9-15(27-2)10-8-13/h4-12,25H,3H2,1-2H3,(H,22,23)(H,24,26)/b21-12-/f/h22,24H	2DD22A727AD7A25B