InChI=1/C18H19N3O2/c19-12-15-3-1-9-21(15)18(22)16(20)11-13-5-7-14(8-6-13)17-4-2-10-23-17/h2,4-8,10,15-16H,1,3,9,11,20H2/t15-,16-/m0/s1 140D140D7D8392C3