InChI=1/C26H24N2O4/c1-17-9-11-21-20(13-17)24(15-22(28-21)18-7-5-4-6-8-18)32-16-26(29)27-19-10-12-23(30-2)25(14-19)31-3/h4-15H,16H2,1-3H3,(H,27,29)/f/h27H 8578FA64C5F8CB1B