InChI=1S/C11H15N3O8/c12-8-3(1-13-11(20)14-8)2-21-10-6(17)4(15)5(16)7(22-10)9(18)19/h1,4-7,10,15-17H,2H2,(H,18,19)(H3,12,13,14,20)