Using O=C(O)[C@@H]1CCCN1C(=O)OCc1ccccc1, CC(C)OC(=O)Nc1cc(N)ccc1C(=O)O to produce CC(C)OC(=O)Nc1cc(NC(=O)[C@@H]2CCCN2C(=O)OCc2ccccc2)ccc1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.