InChI=1/C21H20N4O4/c1-12-17(11-22-29-12)21(28)24-15-8-6-14(7-9-15)23-19(26)16-10-13-4-2-3-5-18(13)25-20(16)27/h6-11H,2-5H2,1H3,(H,23,26)(H,24,28)(H,25,27)/f/h23-25H 1A055179F76FFDBA