Using CCOC(=O)C(CC(=O)OC(C)(C)C)C(=O)C(=O)OCc1ccccc1, COCCl to produce CCOC(=O)C(CC(=O)OC(C)(C)C)=C(OCOC)C(=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.