Using Cc1cccnc1CN1C(=O)C(N2C(=O)c3ccccc3C2=O)N=C(c2ccccc2F)c2ccccc21 to produce Cc1cccnc1CN1C(=O)C(N)N=C(c2ccccc2F)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.