for the following products
2-[[5-[1-[3-[[bis-(Carboxymethyl)amino]methyl]-4-hydroxy-5-methylphenyl]-3-oxo-1-isobenzofuranyl]-2-hydroxy-3-methylphenyl]methyl-(carboxymethyl)amino]acetic acid | o-Cresolphthalexone | Phthalein complexon and o-Cresolphthalein complexone
