Using O=C(O)CCCC=C(c1ccc(CCNS(=O)(=O)c2ccc(Cl)cc2)cc1)c1cccnc1, CCNCC to produce CCN(CC)C(=O)CCCC=C(c1ccc(CCNS(=O)(=O)c2ccc(Cl)cc2)cc1)c1cccnc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.