Using CC(C)(C)OC(=O)Nc1cc(C=C(CC(=O)OCc2ccccc2)C(=O)OC(C)(C)C)ccn1 to produce CC(C)(C)OC(=O)Nc1cc(CC(CC(=O)O)C(=O)OC(C)(C)C)ccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.