InChI=1S/C12H20N4O6/c1-4(2)6(12(20)21)16-10(18)5(3-13)15-11(19)8-7(22-8)9(14)17/h4-8H,3,13H2,1-2H3,(H2,14,17)(H,15,19)(H,16,18)(H,20,21)/t5-,6-,7?,8?/m0/s1