Using O=C(NC1=NN(c2ccc(C(=O)C(F)(F)F)cc2)C(c2ccccc2)C1)C(F)(F)F to produce NC1=NN(c2ccc(C(=O)C(F)(F)F)cc2)C(c2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.