InChI=1/C18H19N3O2/c1-3-7-12(2)23-17-14(10-19-18-15(17)11-20-21-18)16(22)13-8-5-4-6-9-13/h4-6,8-12H,3,7H2,1-2H3,(H,19,20,21)/t12-/m1/s1/f/h21H 4FED55A5B3FEAF43