Using COc1cc(Cl)c(CN2CCC(C3CCCCC3)C2=O)c(Cl)c1 to produce O=C1C(C2CCCCC2)CCN1Cc1c(Cl)cc(O)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.