Using CCc1ccc(Br)cc1C1OC12C(=O)C(C)(C)OC2(C)C to produce CCc1ccc(Br)cc1C1C(=O)C(C)(C)OC(C)(C)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.