InChI=1/C20H20F2N4O/c21-16-8-6-14(7-9-16)19-15(13-25-26-19)12-23-10-3-11-24-20(27)17-4-1-2-5-18(17)22/h1-2,4-9,13,23H,3,10-12H2,(H,24,27)(H,25,26)/p+1/fC20H21F2N4O/h23-25H/q+1 6D4E82FF2E56AC92