¹H NMR (700 MHz, CDCl₃) δ 7.33 (t, J = 7.6 Hz, 5H), 7.29 (d, J = 7.4 Hz, 5H), 7.25 (t, J = 7.2 Hz, 3H), 5.82 (s, 1H), 5.10 (m, J = 7.1 Hz, 3H), 1.48 (d, J = 6.9 Hz, 8H), 1.20 (s, 23H).