Using COC(=O)c1ccc2c(c1)C(NC(=O)c1ccccc1Cl)CCO2 to produce O=C(O)c1ccc2c(c1)C(NC(=O)c1ccccc1Cl)CCO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.