1 H - NMR ( CDCl 3 ) : 8 . 048 ( d , 1 H , J = 8 . 8 Hz ) , 7 . 386 ~ 7 . 296 ( m , 5 H ) , 6 . 567 ( dd , 1 H , J = 8 . 8 , 2 Hz ) , 6 . 509 ( s , 1 H ) , 6 . 369 ( d , 1 H , J = 10 Hz ) , 6 . 207 ( s , 1 H ) , 5 . 348 ( d , 1 H , J = 10 Hz ) , 5 . 120 ( s , 2 H ) , 5 . 088 ( s , 2 H ) , 4 . 637 ( d , 2 H , J = 6 . 8 Hz ) , 4 . 060 ( q , 2 H , J = 14 , 7 . 2 Hz ) , 3 . 799 ( s , 3 H ) , 3 . 032 ( t , 1 H , J = 6 . 4 Hz ) , 1 . 411 ( t , 3 H , J = 6 . 8 Hz ) , 1 . 366 ( s , 6 H )