Using COc1ccc(Br)c(NC(=O)C2CCN(C(=O)OC(C)(C)C)CC2)c1, CCI to produce CCN(C(=O)C1CCN(C(=O)OC(C)(C)C)CC1)c1cc(OC)ccc1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.