Using Nc1c([N+](=O)[O-])cc(Br)c2c1CN(CCc1ccccc1)CC2 to produce Nc1cc(Br)c2c(c1N)CN(CCc1ccccc1)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.