¹H NMR (400 MHz, CDCl₃) δ 7.51 – 7.37 (m, 4H), 6.84 (d, J = 15.6 Hz, 1H), 6.44 (d, J = 15.6 Hz, 1H), 2.90 – 2.80 (m, 2H), 1.69 (dt, J = 15.0, 7.4 Hz, 2H), 1.48 (dq, J = 14.6, 7.4 Hz, 2H), 0.96 (t, J = 7.3 Hz, 3H). ¹³C NMR (101 MHz, CDCl₃) δ 137.88, 131.91 – 130.52 (m), 129.02, 128.42, 128.05, 124.44, 123.69, 123.08 (q, J = 3.7 Hz), 121.95 (q, J = 3.9 Hz), 32.20, 31.41, 21.93, 13.63. HRMS (EI): calcd for C₁₃H₁₅F₃S: 260.0847, found: 260.0844。