InChI=1/C20H20N4O4/c1-4-24-20(27)15-8-6-5-7-14(15)18(23-24)19(26)22-21-12(2)16-11-13(28-3)9-10-17(16)25/h5-11,21,25H,2,4H2,1,3H3,(H,22,26)/f/h22H 0D413C0EB8665DB6