InChI=1/C18H23N3O2/c1-17(2,3)11-7-8-13-12(10-11)18(16(23)19-13)20-15(22)14-6-4-5-9-21(14)18/h7-8,10,14H,4-6,9H2,1-3H3,(H,19,23)(H,20,22)/t14-,18-/m0/s1/f/h19-20H 3DC9D2F333F96202