Using CN1C[C@@H](C(=O)OCc2ccccc2)N(C(=O)OCc2ccccc2)C1=O to produce CN1C[C@@H](C(=O)OCc2ccccc2)NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.