Using CC(C)OC(=O)CC(=O)OC(C)C, COC(CBr)(CBr)OC to produce COC1(OC)CC(C(=O)OC(C)C)(C(=O)OC(C)C)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.