SMILES: C1=CC(=C(C=C1C2(C3=C(C(=C(C(=C3Br)Br)Br)Br)C(=O)O2)C4=CC(=C(C=C4)O)S(=O)(=O)O)S(=O)(=O)O)O
Description: The molecule is an organosulfonic acid that consists of phthalide bearing four bromo substituents at positions 4, 5, 6 and 7 as well as two 4-hydroxy-3-sulfophenyl groups both located at position 1. It has a role as a dye. It is a member of 2-benzofurans, an organobromine compound, an organosulfonic acid and a member of phenols. It derives from a 2-benzofuran-1(3H)-one. It is a conjugate acid of a bromosulfophthalein(2-).