Using O=C(O)CCCCCBr, CCCCC/C=C\CCCC(O)C(CCC/C=C\CCCCC)CCC/C=C\CCCCC to produce CCCCC/C=C\CCCC(CCC/C=C\CCCCC)C(CCC/C=C\CCCCC)OC(=O)CCCCCBr, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.