InChI=1/C16H19N3O2/c1-11-9-13(19-7-3-2-4-8-19)6-5-12(11)10-14-15(20)18-16(21)17-14/h5-6,9-10H,2-4,7-8H2,1H3,(H2,17,18,20,21)/p+1/b14-10+/fC16H20N3O2/h17-19H/q+1 F927684F221AF591