Using C[C@@H]1CCCN1CCc1ccc(-c2ccc(CCC(=O)O)cc2)cc1, CCOC(=O)C1CCNCC1 to produce CCOC(=O)C1CCN(C(=O)CCc2ccc(-c3ccc(CCN4CCC[C@H]4C)cc3)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.