Using CC(=O)OC(C)(C)C, CCOC(=O)c1cc2cc(Cl)ccc2n1Cc1ccccc1 to produce CC(C)(C)OC(=O)CC(=O)c1cc2cc(Cl)ccc2n1Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.