Using Nc1ccccc1Nc1ccccc1, COc1ccccc1N(C(=O)CBr)C(C)C to produce COc1ccccc1N(C(=O)CNc1ccccc1Nc1ccccc1)C(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.