InChI=1S/C13H20N4O6/c1-7(11(18)19)17-9(12(20)21)2-3-15-10(13(22)23)4-8-5-14-6-16-8/h5-7,9-10,15,17H,2-4H2,1H3,(H,14,16)(H,18,19)(H,20,21)(H,22,23)/p-1/t7?,9-,10-/m0/s1