InChI=1/C21H24N2O2/c1-15(25-19-8-7-16-4-2-5-18(16)14-19)21(24)23-13-3-6-20(23)17-9-11-22-12-10-17/h7-12,14-15,20H,2-6,13H2,1H3/t15-,20-/m0/s1 A39B68D125B0BF50