InChI=1/C16H20N4O4/c21-15(18-19-16(22)17-10-12-7-4-8-23-12)13-9-14(24-20-13)11-5-2-1-3-6-11/h1-3,5-6,12,14H,4,7-10H2,(H,18,21)(H2,17,19,22)/t12-,14-/m1/s1/f/h17-19H C47CF4A9BA56998F