Using OCC1CC1, CCOC(=O)c1cc(Br)c(=O)[nH]c1C(F)(F)F to produce CCOC(=O)c1cc(Br)c(OCC2CC2)nc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.