| 英文同义词: | 2-[(5,7-dimethyl-2-oxo-2H-chromen-3-yl)methylidene]-4,4-dimethyl-3-oxopentanenitrile;Pentanenitrile, 2-[(5,7-dimethyl-2-oxo-2H-1-benzopyran-3-yl)methylene]-4,4-dimethyl-3-oxo-;3-(5,7-Dimethyl-2-oxo(2H-chromen-3-yl))-2-(2,2-dimethylpropanoyl)prop-2-enenitrile |