InChI=1/C20H20N4O4/c1-12-17(18(23-20(27)22-12)14-8-4-5-9-15(14)25)19(26)24-21-11-13-7-3-6-10-16(13)28-2/h3-11,18,25H,1-2H3,(H,24,26)(H2,22,23,27)/b21-11+/t18-/m0/s1/f/h22-24H	9599FE0F763B728D