InChI=1/C19H16N4O3/c1-22-12-10-17(11-13-22)20-15-4-6-16(7-5-15)21-19(24)14-2-8-18(9-3-14)23(25)26/h2-13H,1H3,(H,21,24)/p+1/fC19H17N4O3/h20-21H/q+1 47D63AF8DF5A0BB2