InChI=1S/C12H20N4O8/c1-24-10(22)12(23,5-7(17)18)9(21)16-6(8(19)20)3-2-4-15-11(13)14/h6,23H,2-5H2,1H3,(H,16,21)(H,17,18)(H,19,20)(H4,13,14,15)