Using CC(=O)c1cccc(C=Cc2ccc3ccc(Cl)cc3n2)c1, COC(=O)c1ccccc1CI to produce COC(=O)c1ccccc1CCC(=O)c1cccc(C=Cc2ccc3ccc(Cl)cc3n2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.