InChI=1S/C21H25N3O2/c1-14(2)9-11-23-13-15(16-6-3-4-7-18(16)23)12-17-21(26)24-10-5-8-19(24)20(25)22-17/h3-4,6-7,9,13,17,19H,5,8,10-12H2,1-2H3,(H,22,25)/t17-,19-/m0/s1