InChI=1S/C17H18N4O4/c1-9(22)15(18)16-20-13(17(25)21(16)8-14(23)24)6-10-7-19-12-5-3-2-4-11(10)12/h2-7,9,15,19,22H,8,18H2,1H3,(H,23,24)/b13-6-/t9-,15+/m1/s1