InChI=1S/C14H17N3O9/c1-6(18)23-5-9-11(24-7(2)19)12(25-8(3)20)13(26-9)17-14(22)16-10(21)4-15-17/h4,9,11-13H,5H2,1-3H3,(H,16,21,22)/t9-,11-,12-,13-/m1/s1