InChI=1/C20H20N4O4/c1-13(22-16-7-8-17-18(11-16)28-10-2-9-27-17)19(25)24-20(26)23-15-5-3-14(12-21)4-6-15/h3-8,11,13,22H,2,9-10H2,1H3,(H2,23,24,25,26)/t13-/m1/s1/f/h23-24H 65B143FD44AB2C03