Using O=C1Nc2ccc(Cl)cc2C1=O, COc1cccc(OC)c1 to produce COc1cccc(OC)c1C1(O)C(=O)Nc2ccc(Cl)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.