Using O=C[O-], O=C1C(=Cc2ccccc2F)CNCC1=Cc1ccccc1F to produce O=CN1CC(=Cc2ccccc2F)C(=O)C(=Cc2ccccc2F)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.