Using CC(C)(C)OC(=O)Nc1ccc(Cl)cc1, O=Cc1ccc(Br)cc1 to produce CC(C)(C)OC(=O)Nc1ccc(Cl)cc1C(O)c1ccc(Br)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.