Using O=C(NC1CCNCC1)c1ccccc1, O=[N+]([O-])c1ccc(CCBr)cc1 to produce O=C(NC1CCN(CCc2ccc([N+](=O)[O-])cc2)CC1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.