InChI=1/C7H10N2O4/c1-3-4(6(10)9-13-3)2-5(8)7(11)12/h5H,2,8H2,1H3,(H,9,10)(H,11,12)/p-1/t5-/m1/s1/fC7H9N2O4/h8H/q-1 277AB5F73F4576FB