Using CC(C)c1cccc(-c2c(C(=O)OC(C)(C)C)c(N3CCCCC3)nc3ccc(Cl)cc23)c1 to produce CC(C)c1cccc(-c2c(C(=O)O)c(N3CCCCC3)nc3ccc(Cl)cc23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.