Using CCOC(=O)[C@@H]1CCCN1C(=O)[C@H](C)N, CCOC(=O)c1cccc(C(=O)O)n1 to produce CCOC(=O)c1cccc(C(=O)N[C@@H](C)C(=O)N2CCC[C@H]2C(=O)OCC)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.