Using CCOC(=O)CBr, O=C1CCN(C(=O)c2ccc([N+](=O)[O-])cc2)c2ccccc2N1 to produce CCOC(=O)CN1C(=O)CCN(C(=O)c2ccc([N+](=O)[O-])cc2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.