RDkit: De-salt a SMILES

python -c "from rdkit import Chem; from rdkit.Chem.SaltRemover import SaltRemover; print(Chem.MolToSmiles(SaltRemover().StripMol(Chem.MolFromSmiles('O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].[Cu+2].[Zn+2]'))))"

"What in God's holy name are you blathering about?"