InChI=1/C14H14N2O4/c1-7(17)11-10-5-9(8-3-2-4-15-6-8)12(14(19)20)16(10)13(11)18/h2-4,6-7,10-11,17H,5H2,1H3,(H,19,20)/p-1/t7-,10+,11+/m0/s1/fC14H13N2O4/q-1 4AC9E0807209C232