Using NC(=O)C(c1ccccc1Cl)N1CCc2sccc2C1, O=C([O-])[O-] to produce COC(=O)C(c1ccccc1Cl)N1CCc2sccc2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.