Using CC1(C)CCC(Br)=C(CN2CCN(C(=O)OC(C)(C)C)CC2)C1, OB(O)c1ccc(Cl)cc1 to produce CC1(C)CCC(c2ccc(Cl)cc2)=C(CN2CCN(C(=O)OC(C)(C)C)CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.