InChI=1/C18H20N4O4/c1-9(2)14(17-10(3)12-7-5-6-8-13(12)26-17)19-18(23)15-16(22(24)25)11(4)20-21-15/h5-9,14H,1-4H3,(H,19,23)(H,20,21)/t14-/m1/s1/f/h19-20H 0DDA1D0B37AEEE8D