InChI=1/C16H14N2O4/c1-8-4-11(13(22-3)5-9(8)2)14-12(16(20)21)6-10(7-17)15(19)18-14/h4-6H,1-3H3,(H,18,19)(H,20,21)/p-1/fC16H13N2O4/h18H/q-1	4A90DB1B99E6CE7A