InChI=1S/C26H31N3O3/c1-6-25(2,3)22-17(14-18-24(31)29-13-7-8-19(29)23(30)27-18)15-9-10-20-16(21(15)28-22)11-12-26(4,5)32-20/h6,9-12,18-19,28H,1,7-8,13-14H2,2-5H3,(H,27,30)/t18-,19-/m0/s1