Using O=C(NC1Cc2cc(-c3ccccc3)cnc2N(Cc2ccccc2)C1=O)OCc1ccccc1 to produce NC1Cc2cc(-c3ccccc3)cnc2N(Cc2ccccc2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.