Using COC(=O)c1cccc(-c2c(C)n(Cc3ccc(Br)cc3)c3ccc(OC)cc23)c1 to produce COc1ccc2c(c1)c(-c1cccc(C(=O)O)c1)c(C)n2Cc1ccc(Br)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.