InChI=1/C20H20N4O4/c1-11-4-9-15-16(10-11)19(27)24(18(15)26)12(2)17(25)22-13-5-7-14(8-6-13)23-20(28)21-3/h4-10,12H,1-3H3,(H,22,25)(H2,21,23,28)/t12-/m1/s1/f/h21-23H	8722009F5B0A5519