InChI=1S/C24H23N3O4/c1-15-4-6-17(7-5-15)22(28)25-21-13-19(12-20(14-21)24(30)27(2)3)16-8-10-18(11-9-16)23(29)26-31/h4-14,31H,1-3H3,(H,25,28)(H,26,29)