“…mp 304.6-304.9 • C. 19 F NMR ((CD 3 ) 2 CO): δ −112.1 (septet d, 4F, J F(5)-2CF3(4,6) = 33 Hz, J F(5)-F(28) = 15 Hz, F-5,11,17,23), −91.6 (m, 4F, F-25,26,27,28), −53.5 (dd, 24F, J CF3(4)-F(5) = 33 Hz, J CF3(4)-F(28) = 7 Hz, CF 3 (4,6,10,12,16,18,22,24)). 13 10)-F(11) = 28 Hz, CF 3 (10,24)), −55.3 (dd, 6F, J CF3(12)-F(11) = 36 Hz, J CF3(12)-F(27) = 6 Hz, CF 3 (12,22)), −55.1 (dd, 6F, J CF3(16)-F(17) = 36 Hz, J CF3(16)-F(26) = 4 Hz, CF 3 (16,18)). 19…”