Using CCOC(=O)C1Cc2ccccc2C1, CC(C)(C)OC(=O)CBr to produce CCOC(=O)C1(CC(=O)OC(C)(C)C)Cc2ccccc2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.