InChI=1/C16H14N2O6/c1-2-7-18-15(22)11(14(21)17-16(18)23)8-10-5-3-4-6-12(10)24-9-13(19)20/h2-6,8H,1,7,9H2,(H,19,20)(H,17,21,23)/p-1/b11-8-/fC16H13N2O6/h17H/q-1 145FB022371A6882