InChI=1S/C20H21N3O4/c21-16(19(24)25)9-12-5-7-14(8-6-12)27-20(26)17(22)10-13-11-23-18-4-2-1-3-15(13)18/h1-8,11,16-17,23H,9-10,21-22H2,(H,24,25)