Using O=[N+]([O-])c1ccccc1CBr, CCOC(=O)c1ccc(N2CCNCC2)cc1 to produce CCOC(=O)c1ccc(N2CCN(Cc3ccccc3[N+](=O)[O-])CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.