Using NCC(=O)OCc1ccccc1, CC(C)(C)OC(=O)N1CCC[C@H]1C(=O)O to produce O=C(CNC(=O)[C@@H]1CCCN1)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.