InChI=1S/C22H23N3O3/c1-3-14(2)18-19-24-21-16(11-7-8-12-28-21)22(27)25(19)17(20(26)23-18)13-15-9-5-4-6-10-15/h4-12,14,17-18H,3,13H2,1-2H3,(H,23,26)/t14?,17-,18+/m0/s1