InChI=1S/C11H18N2O8/c12-6(9(17)18)2-1-3-13-7(14)4-11(21,10(19)20)5-8(15)16/h6,21H,1-5,12H2,(H,13,14)(H,15,16)(H,17,18)(H,19,20)/p-2/t6-,11+/m1/s1