InChI=1/C21H20F2N2O2/c1-24-20(26)16-7-4-5-14(11-16)12-25-13-18-17-8-3-2-6-15(17)9-10-19(18)27-21(22)23/h2-11,21,25H,12-13H2,1H3,(H,24,26)/f/h24H BD23FDBEC0FEE6B1