Using CC(C)(C)OC(=O)CC(=O)CC(=O)OC(C)(C)C, CCC(=O)CC(=O)CC to produce CCc1cc(CC)c(C(=O)OC(C)(C)C)c(O)c1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.