邻氨基苯酚

ethyl (3'-oxo-3',4'-dihydro-2'H-1',4'-benzoxazin-2'-yl)acetate

ethyl 3-[(2-hydroxyphenyl)carbamoyl]acrylate

3,4-二氢-2H-苯并[1,4]噁嗪-2-羧酸乙酯