Using COCCOc1cnc2ccc(C(F)(F)C(=O)NNc3ccc(Cl)nn3)cc2c1 to produce COCCOc1cnc2ccc(C(F)(F)c3nnc4ccc(Cl)nn34)cc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.