Using CCCCC(=O)O, C[C@@H]1NC(=O)O[C@@H]1c1ccccc1 to produce CCCCC(=O)N1C(=O)O[C@H](c2ccccc2)[C@@H]1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.