Using CC(=O)COCCCC(N(C)C)C1(c2ccc(Cl)cc2)CCC1 to produce CC(O)COCCCC(N(C)C)C1(c2ccc(Cl)cc2)CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.