Using O=C(NCc1ccccn1)c1cc(OCC(F)(F)F)ccc1OCC(F)(F)F to produce O=C(NCC1CCCCN1)c1cc(OCC(F)(F)F)ccc1OCC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.