Using FC(F)(F)c1cc[nH]n1, O=C(c1ccc(F)cc1Cl)N1Cc2cccn2Cc2ccccc21 to produce O=C(c1ccc(-n2ccc(C(F)(F)F)n2)cc1Cl)N1Cc2cccn2Cc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.