InChI=1/C20H20N4O4/c1-13-8-10-15(11-9-13)21-18(27)22-16(25)12-24-17(26)20(2,23-19(24)28)14-6-4-3-5-7-14/h3-11H,12H2,1-2H3,(H,23,28)(H2,21,22,25,27)/t20-/m1/s1/f/h21-23H	AA6A9E1805788A87