1 H NMR ( 300 MHz , 클로로포름 - d ) 1 . 43 ( s , 9 H ) , 2 . 37 ( s , 6 H ) , 2 . 74 ( t , J = 5 . 5 Hz , 2 H ) , 3 . 85 ( t , J = 6 . 2 Hz , 1 H ) , 3 . 92 ( s , 3 H ) , 4 . 40 ( m , 4 H ) , 7 . 43 - 7 . 65 ( m , 5 H ) , 7 . 95 ( d , J = 1 . 13 Hz , 1 H ) , 8 . 06 ( d , J = 1 . 51 , 1 H ) , 8 . 26 - 8 . 35 ( m , 3 H ) . LCMS ( ES ) : 615 ( M + H ) , RT = 1 . 925 분 .