InChI=1/C19H18N6O4/c20-18(22-11-4-2-1-3-5-11)25-19-23-13(17(27)24-19)9-16(26)21-12-6-7-14-15(8-12)29-10-28-14/h1-8,13H,9-10H2,(H,21,26)(H4,20,22,23,24,25,27)/t13-/m0/s1/f/h20-23,25H F8E222B9726E7648