Using CC(C)(C)OC(=O)n1ccc(CCCC(=O)OCc2ccccc2)n1, O=C1CCC(=O)N1Br to produce CC(C)(C)OC(=O)n1ccc(CCC(Br)C(=O)OCc2ccccc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.