Using N[C@H](Cc1c[nH]c2ccccc12)C(=O)O, CCCCCCCC=O to produce CCCCCCCC1N[C@@H](C(=O)O)Cc2c1[nH]c1ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.