Using O=C1C=CCCC1, COc1ccc(-c2cnc(Cl)c(C=O)c2)cc1 to produce COc1ccc(-c2cnc(Cl)c(C(O)C3=CCCCC3=O)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.