Using O=C(c1ccc(Br)cc1)c1ccc(OCC=CCN(C(=O)C(F)(F)F)C2CC2)cc1 to produce O=C(c1ccc(Br)cc1)c1ccc(OCC=CCNC2CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.