InChI=1S/C25H31N3O4/c1-8-24(3,4)21-17(13-19-23(31)26-14(2)22(30)28-19)16-11-15(9-10-18(16)27-21)12-20(29)25(5,6)32-7/h8-11,13,20,27,29H,1-2,12H2,3-7H3,(H,26,31)(H,28,30)/b19-13-/t20-/m0/s1