1 H NMR ( 400 MHz , DMSO ) δ 8 . 30 ( d , J = 2 . 9 Hz , 1 H ) , 8 . 04 ( d , J = 2 . 9 Hz , 1 H ) , 7 . 86 ( dd , J = 14 . 9 , 2 . 9 Hz , 1 H ) , 7 . 62 ( d , J = 3 . 1 Hz , 1 H ) , 7 . 59 - 7 . 49 ( m , 2 H ) , 7 . 34 ( d , J = 2 . 9 Hz , 1 H ) , 7 . 29 ( d , J = 15 . 0 Hz , 1 H ) , 6 . 87 ( s , 2 H ) , 3 . 53 ( s , 2 H ) , 3 . 44 - 3 . 21 ( m , 1 H ) , 2 . 49 ( ddd , J = 24 . 6 , 18 . 7 , 12 . 1 Hz , 4 H ) , 2 . 39 - 2 . 26 ( m , 4 H ) , 2 . 13 ( s , 3 H ) , 0 . 71 - 0 . 28 ( m , 2 H ) , 0 . 28 -- 0 . 20 ( m , 2 H ) . LR - MS ( ESI ) m / z 584 ( M + 1 ) .