InChI=1/C18H20N4O4/c1-10(19-11-4-6-13-14(8-11)22-18(24)21-13)17(23)20-12-5-7-15(25-2)16(9-12)26-3/h4-10,19H,1-3H3,(H,20,23)(H2,21,22,24)/t10-/m1/s1/f/h20-22H 67B57630A35F0577