Using O=C(O)COc1ccc(Cl)cc1Cl, COC(=O)c1ccccc1N to produce COC(=O)c1ccccc1NC(=O)COc1ccc(Cl)cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.