3,3'-[[2-[(2-Carboxyethoxy)methyl]-2-[[(phenyl methoxy)carbonyl]amino]-1,3-propanediyl]bis(oxy)]bis-propanoic acid 5g

3,3'-[[2-[(2-Carboxyethoxy)methyl]-2-[[(phenyl methoxy)carbonyl]amino]-1,3-propanediyl]bis(oxy)]bis-propanoic acid 5g