NMR:
1H NMR: (400 MHz, DMSO-d6) δ(ppm): 9.98 (s, 1H); 8.32 (d, J=2 Hz, 1H); 8.20 (s, 1H); 7.40 (m, 3H); 7.16 (t, J=7.2 Hz, 1H); 7.09 (d, J=7.2 Hz, 2H); 7.01 (d, J=7.2 Hz, 1H); 6.66 (dd, J=12.8 and 10 Hz, 1H); 6.24 (dd, J=12.8 and 2 Hz, 1H); 5.73 (dd, J=10 and 2 Hz, 1H); 4.62 (m, 1H); 3.41 (br m, 4H); 2.48 (br m, 5H); 2.44 (s, 3H); 1.96 (m, 4H); 1.45 (br m, 4H);
13C NMR: (400 MHz, DMSO-d6) δ: 170.0; 164.4; 158.5; 156.8; 155.9; 154.0; 148.3; 143.0; 132.0; 130.4; 129.9; 128.6; 124.3; 124.0; 119.6; 119.3; 97.8; 62.1; 55.6; 48.9; 46.6; 41.7; 31.3; 27.1; 21.6
