¹H NMR (400 MHz, CDCl₃) δ 7.72 – 7.70 (dd, J = 7.6, 1.3 Hz, 1H), 7.45 – 7.43 (m, 1H), 7.02 – 6.95 (m, 2H), 4.40 – 4.29 (m, 1H), 3.90 – 3.86 (m, 4H), 3.74 – 3.72 (dd, J = 14.9, 7.4 Hz, 1H), 3.42 – 3.36 (dd, J = 16.8, 6.1 Hz, 1H), 3.17 – 3.11 (dd, J = 16.8, 6.9 Hz, 1H), 2.18 – 2.14 (m, 1H), 1.94 – 1.86 (m, 2H), 1.58 – 1.49 (m, 1H). ¹³C NMR (100 MHz, CDCl₃) δ: 25.6, 31.5, 49.9, 55.4, 67.7, 75.4, 111.5, 120.7, 128.3, 130.4, 133.5, 158.6, 200.3.