Using FC1CNC1, Cn1ncc(C(=O)O)c1C(=O)Nc1ccn2nc(-c3ccccc3)nc2c1 to produce Cn1ncc(C(=O)N2CC(F)C2)c1C(=O)Nc1ccn2nc(-c3ccccc3)nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.