Using Cc1cccc(CCBr)c1, COC(=O)c1cc(O)c2c(c1)OC(F)(F)O2 to produce COC(=O)c1cc(OCCc2cccc(C)c2)c2c(c1)OC(F)(F)O2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.