Using Nc1ccc2c(c1)Cc1c-2[nH]c(=O)c2nccn12, O=C=Nc1ccc(F)cc1 to produce O=C(Nc1ccc(F)cc1)Nc1ccc2c(c1)Cc1c-2[nH]c(=O)c2nccn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.