Using CC(C)(C)OC(=O)N1CCc2cc(N)ccc21, O=C(Cl)CCCCBr to produce CC(C)(C)OC(=O)N1CCc2cc(N3CCCCC3=O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.