Using CCOC(=O)C(C)c1cc(Cl)c2c(c1)C=CC(C)(C)N2C to produce CC(C(=O)O)c1cc(Cl)c2c(c1)C=CC(C)(C)N2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.