InChI=1S/C11H12N4O7/c16-4-5(17)7(10(19)20)21-11(6(4)18)22-9-3-8(13-1-12-3)14-2-15-9/h1-2,4-7,11,16-18H,(H,19,20)(H,12,13,14,15)