Using CCOC(=O)Cc1c(-c2cccc(Br)c2)c2cc(C)c(Cl)cc2oc1=O to produce Cc1cc2c(-c3cccc(Br)c3)c(CC(=O)O)c(=O)oc2cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.