InChI=1/C16H14N4O4/c17-9-10-24-13-7-5-12(6-8-13)11-18-16(21)19-14-3-1-2-4-15(14)20(22)23/h1-8H,10-11H2,(H2,18,19,21)/f/h18-19H 89CA75DE977DE251