Using CC(C)(C)OC(=O)N1CCC(O)CC1, COc1ccc(Br)c2cc(CBr)oc12 to produce COc1ccc(Br)c2cc(COC3CCN(C(=O)OC(C)(C)C)CC3)oc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.