InChI=1S/C10H14N4O9/c11-10-12-6(14-21)5(7(18)13-10)23-9-3(17)1(15)2(16)4(22-9)8(19)20/h1-4,9,15-17,21H,(H,19,20)(H4,11,12,13,14,18)