InChI=1/C11H18N4O4/c1-11(2,3)15-8(17)5-12-7(16)4-6-9(18)14-10(19)13-6/h6H,4-5H2,1-3H3,(H,12,16)(H,15,17)(H2,13,14,18,19)/t6-/m0/s1/f/h12-15H 6E8C2D348CC08E2D