InChI=1/C16H20N4O4/c17-16(22)18-10-12-4-3-9-19(11-12)15(21)8-7-13-5-1-2-6-14(13)20(23)24/h1-2,5-8,12H,3-4,9-11H2,(H3,17,18,22)/b8-7+/t12-/m0/s1/f/h18H,17H2 B8E0B27CB746CDA4