Chemical Name: (2R,4S)-2-((1S)-1-((R)-2-amino-2-(4-hydroxyphenyl)acetamido)-2-(((1R)-2-((((2R)-4-carboxy-5,5-dimethylthiazolidin-2-yl)methyl)amino)-1-(4-hydroxyphenyl)-2-oxoethyl)amino)-2-oxoethyl)-5,5-dimethylthiazolidine-4-carboxylic acid, Disodium salt