InChI=1S/C8H16N2O6/c1-3(6(10)8(14)15)16-5(11)2-4(9)7(12)13/h3-6,11H,2,9-10H2,1H3,(H,12,13)(H,14,15)/t3-,4+,5-,6+/m1/s1