Using FC(F)(F)c1ccc(CBr)c(C(F)(F)F)c1, NC1=NC(=O)CN1C(=O)OCc1ccccc1 to produce O=C1CN(C(=O)OCc2ccccc2)C(NCc2ccc(C(F)(F)F)cc2C(F)(F)F)=N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.