Using N#Cc1ccc(COC(=O)c2cc(Br)ccc2OCc2ccc(C#N)cc2)cc1 to produce N#Cc1ccc(COc2ccc(Br)cc2C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.