InChI=1/C15H20N4O4/c20-18(21)13-5-6-14(15(11-13)19(22)23)17-9-7-16(8-10-17)12-3-1-2-4-12/h5-6,11-12H,1-4,7-10H2/p+1/fC15H21N4O4/h16H/q+1 330C0AD99920897C