Using COC(=O)C1CCN(c2ccc(Nc3c([N+](=O)[O-])cnc4ccc(Br)cc34)cc2C(F)(F)F)CC1 to produce COC(=O)C1CCN(c2ccc(Nc3c(N)cnc4ccc(Br)cc34)cc2C(F)(F)F)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.