InChI=1/C16H17N3O/c1-3-16-7-6-13(20)9(2)14(16)10-4-5-12-15(11(10)8-16)18-19-17-12/h4-5H,3,6-8H2,1-2H3,(H,17,18,19)/t16-/m1/s1/f/h19H DF8BE251B4CFD8B5