InChI=1S/C10H16N4O4/c1-5(15)8(10(17)18)14-9(16)7(11)2-6-3-12-4-13-6/h3-5,7-8,15H,2,11H2,1H3,(H,12,13)(H,14,16)(H,17,18)/t5-,7+,8+/m1/s1