InChI=1S/C21H27N3O4/c1-15(2)13-24-14-18(16-5-3-4-6-17(16)19(24)25)22-20(26)23-9-7-21(8-10-23)27-11-12-28-21/h3-6,14-15H,7-13H2,1-2H3,(H,22,26)