InChI=1/C20H20N2O4/c1-3-25-15-8-9-18-13(11-15)10-14(12-26-18)19(23)22-17-7-5-4-6-16(17)20(24)21-2/h4-11H,3,12H2,1-2H3,(H,21,24)(H,22,23)/f/h21-22H F96985E4DF57A7A2