InChI=1S/C11H18N4O3/c1-6(2)9(12)10(16)15-8(11(17)18)3-7-4-13-5-14-7/h4-6,8-9H,3,12H2,1-2H3,(H,13,14)(H,15,16)(H,17,18)/t8-,9-/m0/s1