화합물 33 LC / MS D : 100 % 순도 , UV = 214 nm , Rt = 1 . 353 분 , ESI 375 . 1 ( M + H ) +. 1 H NMR ( 400 MHz , DMSO - d 6 ) δ 8 . 14 ( 0 . 27 H , HCOOH ) , 7 . 97 - 7 . 94 ( m , 1 H ) , 7 . 37 ( s , 1 H ) , 7 . 26 ( d , J = 6 . 8 Hz , 1 H ) , 6 . 40 ( d , J = 7 . 2 Hz , 1 H ) , 3 . 97 - 3 . 86 ( m , 2 H ) , 3 . 39 - 3 . 29 ( m , 4 H ) , 3 . 10 - 3 . 04 ( m , 2 H ) , 2 . 66 - 2 . 63 ( m , 3 H ) , 2 . 50 - 2 . 48 ( m , 2 H ) , 2 . 38 - 2 . 34 ( m , 2 H ) , 1 . 90 - 1 . 68 ( m , 6 H ) .