InChI=1S/C19H19N7O8/c20-16-12-17(23-6-22-16)25(7-24-12)19-15(30)14(29)11(34-19)2-1-3-21-18(31)9-4-8(26(32)33)5-10(27)13(9)28/h1-2,4-7,11,14-15,19,27-30H,3H2,(H,21,31)(H2,20,22,23)/b2-1+/t11-,14-,15-,19-/m1/s1