InChI=1S/C11H13N5O7/c12-7-2-8(14-1-13-2)16-11(15-7)23-10-5(19)3(17)4(18)6(22-10)9(20)21/h1,3-6,10,17-19H,(H,20,21)(H3,12,13,14,15,16)