Using O=C(N[C@@H](Cc1c[nH]c2ccccc12)C(=O)NCc1ccccc1)OCc1ccccc1 to produce N[C@@H](Cc1c[nH]c2ccccc12)C(=O)NCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.