Using C[C@H](NC(=O)OCc1ccccc1)C(=O)N1CCC[C@H]1C(=O)O, CCCCCN to produce CCCCCNC(=O)[C@@H]1CCCN1C(=O)[C@H](C)NC(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.