InChI=1S/C19H25N3O3/c1-3-5-10-14(23)13-18(22(6-4-2)19(10)24)21-17(20-13)12-8-9-7-11(12)16-15(9)25-16/h9-12,15-16H,3-8H2,1-2H3,(H,20,21)/t9-,10?,11+,12+,15-,16+/m1/s1