1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ = 8 . 26 - 7 . 83 ( m , 4 H ) , 6 . 37 ( br s , 2 H ) , 5 . 89 ( br s , 2 H ) , 5 . 36 - 5 . 07 ( m , 2 H ) , 4 . 95 ( br d , J = 3 . 5 Hz , 2 H ) , 4 . 58 ( br dd , J = 6 . 3 , 10 . 6 Hz , 2 H ) , 4 . 43 ( br s , 2 H ) , 4 . 12 - 4 . 00 ( m , 4 H ) , 3 . 89 - 3 . 70 ( m , 2 H ) , 3 . 19 ( q , J = 7 . 2 Hz , 12 H ) , 1 . 30 ( t , J = 7 . 4 Hz , 18 H )