InChI=1/C21H17FN2O3/c22-17-8-4-7-16(13-17)20(14-21(25)15-5-2-1-3-6-15)23-18-9-11-19(12-10-18)24(26)27/h1-13,20,23H,14H2/t20-/m0/s1 89BEDEE09245FD9C