Using O=C1CC(c2cccc(Br)c2)=Nc2ccc([N+](=O)[O-])cc2N1 to produce Nc1ccc2c(c1)NC(=O)CC(c1cccc(Br)c1)=N2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.