Using CC(C)(C)OC(=O)NCc1ccc2c(Br)c(O)ccc2c1, COC(=O)CBr to produce COC(=O)COc1ccc2cc(CNC(=O)OC(C)(C)C)ccc2c1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.