InChI=1S/C11H22N4O4/c12-6-2-1-3-8(11(18)19)15-10(17)7(13)4-5-9(14)16/h7-8H,1-6,12-13H2,(H2,14,16)(H,15,17)(H,18,19)/t7-,8-/m0/s1