Using C[C@H](C(=O)O)N1CC[C@H](NS(=O)(=O)c2ccc3cc(Cl)ccc3c2)C1=O, CC1CCCNC1 to produce CC1CCCN(C(=O)[C@@H](C)N2CC[C@H](NS(=O)(=O)c3ccc4cc(Cl)ccc4c3)C2=O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.