InChI=1S/C20H19N3O2/c1-11(24)15-9-21-10-16-14(15)8-18-19-13(6-7-23(18)20(16)25)12-4-2-3-5-17(12)22-19/h2-5,9-11,18,22,24H,6-8H2,1H3/t11-,18-/m1/s1