Using CCOC(=O)c1c(C(C)C)nc2c(C)cc(Cl)cc2c1Cc1ccccc1Cl to produce Cc1cc(Cl)cc2c(Cc3ccccc3Cl)c(C(=O)O)c(C(C)C)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.