InChI=1/C21H20N2O4/c1-21(2)9-11-4-3-5-12(20(11)27-21)13-7-18(24)22-15-8-16-17(6-14(13)15)26-10-19(25)23-16/h3-6,8,13H,7,9-10H2,1-2H3,(H,22,24)(H,23,25)/t13-/m1/s1/f/h22-23H	64FEC8EBF0FC4EB6