IUPAC:2',4,7,7'-tetrachloro-3',6'-bis[(2,2-dimethylpropanoyl)oxy]-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-6-carboxylic acid
IUPAC:2',4,7,7'-tetrachloro-3',6'-bis[(2,2-dimethylpropanoyl)oxy]-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-6-carboxylic acid