Using O=C(O)c1ccc([N+](=O)[O-])cc1Br, C1CCNC1 to produce O=C(c1ccc([N+](=O)[O-])cc1Br)N1CCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.