InChI=1S/C25H31N3O5/c29-21-7-4-20(5-8-21)6-9-23(31)28-19-3-17-26-16-1-2-18-27-24(32)12-15-25(33)13-10-22(30)11-14-25/h4-15,26,29,33H,1-3,16-19H2,(H,27,32)(H,28,31)/b9-6+,15-12?