Using O=C=Nc1ccc(Cl)cc1, O=C(O)C1Cc2ccccc2N1 to produce O=C(O)C1Cc2ccccc2N1C(=O)Nc1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.