Using CCCCOC(=O)CBr, COC(=O)C1CCN(c2ccc(Nc3c(N)cnc4ccc(Br)cc34)cc2C(F)(F)F)CC1 to produce COC(=O)C1CCN(c2ccc(N3CC(=O)Nc4cnc5ccc(Br)cc5c43)cc2C(F)(F)F)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.