Using CCOC(=O)c1nc2c(Cl)nc3cc(C(F)(F)F)ccc3n2c1C, O=C1CCC(=O)N1Br to produce CCOC(=O)c1nc2c(Cl)nc3cc(C(F)(F)F)ccc3n2c1CBr, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.