2',4',5',7'-四溴-3',6'-二羟基-3-氧代-3H-螺[异苯并呋喃-1,9'-氧杂蒽]-6-羧酸

2',4',5',7'-四溴-3',6'-二羟基-3-氧代-3H-螺[异苯并呋喃-1,9'-氧杂蒽]-6-羧酸

2',4',5',7'-Tetrabromo-3',6'-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-6-carboxylic acid