decrease serum concentration
prompt:molecule-molecule interaction [SEP] smiles:[Ca++].[Ca++].[Ca++].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.O.O.[98Tc+4].[O-]P([O-])(=O)CP([O-])([O-])=O
wspaced:decrease serum concentration