InChI=1S/C10H12N4O4/c1-4-6(15)7(16)10(18-4)14-3-13-5-8(14)11-2-12-9(5)17/h2-4,6-7,10,15-16H,1H3,(H,11,12,17)/t4-,6-,7-,10-/m1/s1