[{"from": "human", "value": "Describe this molecule. [La+3]"}, {"from": "gpt", "value": "The molecule is the ionized form of lanthanum (trivalent ion) with phosphate binding property. Lanthanum ion binds dietary phosphate and inhibits the absorption of phosphate by forming highly insoluble lanthanum-phosphate complexes that reduce the concentrations of serum phosphate and calcium phosphate."}]