¹H NMR (400 MHz, CDCl₃) δ: 7.51 – 7.50 (d, J = 7.5 Hz, 1H), 7.41 – 7.37 (m, 2H), 7.35 – 7.30 (dd, J = 14.4, 7.2 Hz, 1H), 4.38 – 4.32 (p, J = 6.7 Hz, 1H), 3.87 – 3.84 (dd, J = 14.6, 7.3 Hz, 1H), 3.74 – 3.72 (dd, J = 14.8, 7.5 Hz, 1H), 3.31 – 3.25 (dd, J = 16.3, 6.9 Hz, 1H), 3.14 – 3.09 (dd, J = 16.3, 6.0 Hz, 1H), 2.18 – 2.13 (td, J = 12.7, 6.5 Hz, 1H), 1.95 – 1.90 (m, 2H), 1.62 – 1.53 (m, 1H). ¹³C NMR (100 MHz, CDCl₃) δ: 25.6, 31.4, 48.9, 67.8, 75.1, 126.9, 129.1, 130.4, 130.8, 131.7, 139.4, 201.4.