InChI=1/C20H22N2O2/c1-4-12-5-7-13(8-6-12)17-14(11-21)19(22)24-16-10-20(2,3)9-15(23)18(16)17/h5-8,17H,4,9-10,22H2,1-3H3/t17-/m1/s1 CFC3B18C8704B6A2