Using COC(=O)CCN, C[C@H](NC(=O)N(Cc1ccc(C(=O)O)cc1)c1ccc(C2CCCCC2)cc1)c1ccc(Cl)cc1 to produce COC(=O)CCNC(=O)c1ccc(CN(C(=O)N[C@@H](C)c2ccc(Cl)cc2)c2ccc(C3CCCCC3)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.