InChI=1/C19H20N4O4/c1-13-15(8-5-9-16(13)23(26)27)21-19(25)22-11-10-20-18(24)12-17(22)14-6-3-2-4-7-14/h2-9,17H,10-12H2,1H3,(H,20,24)(H,21,25)/t17-/m1/s1/f/h20-21H 95076F659C604424