InChI=1/C20H23N3O4/c1-11-7-12(2)19(13(3)8-11)21-18(26)9-14(4)22-23-20(27)16-6-5-15(24)10-17(16)25/h5-10,22,24-25H,1-4H3,(H,21,26)(H,23,27)/b14-9+/f/h21,23H 760EF914E3908844