InChI=1S/C5H4N2O4.C5H14NO/c8-3-1-2(4(9)10)6-5(11)7-3;1-6(2,3)4-5-7/h1H,(H,9,10)(H2,6,7,8,11);7H,4-5H2,1-3H3/q;+1/p-1