InChI=1/C16H14N2O6/c1-9-5-11(3-4-17(23)24)10(2)18(9)14-7-12(15(19)20)6-13(8-14)16(21)22/h3-8H,1-2H3,(H,19,20)(H,21,22)/p-2/b4-3+/fC16H12N2O6/q-2 0C0CF7F70BC38FB2