SMILES: CC1=CC=C(C=C1)N2C(=O)C3=CC=CC4=C3C(=CC(=C4N)S(=O)(=O)O)C2=O
Description: The molecule is a member of the class of benzoisoquinolines that is 1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinoline-5-sulfonic acid substituted by 4-tolyl and amino groups at positions 2 and 6 respectively. The monosodium salt is the biological stain 'lissamine flavine FF'. It is a benzoisoquinoline, an arenesulfonic acid, an aromatic amine and a dicarboximide. It is a conjugate acid of a lissamine flavine FF(1-).