InChI=1/C16H15F4NO2/c1-9-14(22)21-13-5-4-11(17)8-12(13)15(23-9,16(18,19)20)7-6-10-2-3-10/h4-10H,2-3H2,1H3,(H,21,22)/b7-6+/t9-,15+/m1/s1/f/h21H F564DEBAB223B3BC