InChI=1/C15H18N4O4/c20-14-5-7-18(8-6-16-14)15(21)10-1-4-12(17-11-2-3-11)13(9-10)19(22)23/h1,4,9,11,17H,2-3,5-8H2,(H,16,20)/f/h16H CE7725DCDE0CF2AB