“…H NMR (400 MHz, DMSO-d6 ) δ (ppm): 8.55 (1H, d, J = 8.2 Hz); 8.11 (1H, d, J = 1.6 Hz); 7.96 (1H, d, J = 9.4 Hz); 7.80 (2H, d, J = 8.2 Hz); 7.62 (2H, t, J = 8.2 Hz); 7.51 (1H, d, J = 10.1 Hz); 7.45 (1H, d, J = 10.1 Hz); 6.965 (1H, d, J = 9.4 Hz); 13 C NMR (100 MHz, CDCl 3 ) δ (ppm): 148.6, 148.1, 147.6, 138.: FT-IR (KBr, cm -1 ): 3411 (bs), 1650, 1613. 1 H NMR (400 MHz, CDCl 3 ) δ (ppm): 12.16 (OH, s), 8.58 (1H, dd, J = 8.13 and 2.03 Hz); 7.85 (2H, d, J = 7.88 Hz); 7.68 (2H, d, J = 7.88); 7.51 (1H, d, J = 7.28 Hz); 7.49 (1H, d, J = 7.28 Hz); 7.45 (1H, dd, J = 7.95 and 2.02 Hz); 7.43 (1H, dt, J = 7.65 and 1.99 Hz); 7.42 (1H, dt, J = 7.75 and 1.97 Hz); 13 C NMR (100 MHz, CDCl 3 ) δ (ppm): 143.33, 137.30, 134.15, 131.15, 128.47, 127.87, 124.12, 121.33, 120.13, 119.35, 119.23, 117.14, 115.71, 111.18.…”