Using CCN1c2ccccc2C(C)(C)c2cc3c(cc21)C(CC)(CC)c1ccccc1-3, CC(=O)Cl to produce CCN1c2ccc(C(C)=O)cc2C(C)(C)c2cc3c(cc21)C(CC)(CC)c1ccccc1-3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.