InChI=1S/C26H31N3O3/c1-6-25(2,3)22-17(13-19-24(31)29-11-7-8-20(29)23(30)28-19)16-12-15-9-10-26(4,5)32-21(15)14-18(16)27-22/h6,9-10,12,14,19-20,27H,1,7-8,11,13H2,2-5H3,(H,28,30)/t19-,20+/m0/s1