InChI=1/C20H25N3O4/c1-3-26-11-12-27-18-10-5-4-9-17(18)23-19(24)14-22-16-8-6-7-15(13-16)20(25)21-2/h4-10,13,22H,3,11-12,14H2,1-2H3,(H,21,25)(H,23,24)/f/h21,23H 016981D313D06C33