Using CCOC(=O)/C=C(C)/C=C/C(Br)=C(/C)c1ccc2c(c1)C(C)(C)CCC2(C)C to produce CC(/C=C/C(Br)=C(/C)c1ccc2c(c1)C(C)(C)CCC2(C)C)=C\C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.