InChI=1/C20H20N4O4/c1-27-17-7-6-16(28-11-12-2-4-13(5-3-12)19(25)26)9-14(17)8-15-10-23-20(22)24-18(15)21/h2-7,9-10H,8,11H2,1H3,(H,25,26)(H4,21,22,23,24)/f/h23H,21-22H2 D056B7B32CB11AE4