InChI=1/C19H20N4O5/c1-3-28-18(27)22-21-15(24)11-23-16(25)19(2,20-17(23)26)14-9-8-12-6-4-5-7-13(12)10-14/h4-10H,3,11H2,1-2H3,(H,20,26)(H,21,24)(H,22,27)/t19-/m1/s1/f/h20-22H 96BCEC1F295A8320