Using COC(=O)c1cc2cc(O)ccc2cc1O, CC(C)(C)OC(=O)CBr to produce COC(=O)c1cc2cc(OCC(=O)OC(C)(C)C)ccc2cc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.