Using CCCCCCC(C)(C)c1ccc(Br)c(OCc2ccccc2)c1, CCOC1=CC(=O)CCC1 to produce CCCCCCC(C)(C)c1ccc(C2=CC(=O)CCC2)c(OCc2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.