Using O=C(O)C1NCc2ccccc21, O=C=Nc1ccc(Cl)cc1 to produce O=C(O)C1(C(=O)Nc2ccc(Cl)cc2)NCc2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.