Using O=C([O-])[O-], O=C(CCc1ccc(Cl)cc1Cl)NC1CC(=O)c2ccccc2NC1=O to produce CN1C(=O)C(NC(=O)CCc2ccc(Cl)cc2Cl)CC(=O)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.