Using CCCN(CCC)C(=O)c1cc(NC(=O)CCCCl)cc(C(=O)OC)c1 to produce CCCN(CCC)C(=O)c1cc(C(=O)OC)cc(N2CCCC2=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.