Using O=C(OCc1ccccc1)N1CCN2c3ccccc3N(C(=O)C(F)(F)F)CC2C1 to produce O=C(N1CC2CNCCN2c2ccccc21)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.