Using BrCC1CC1, C[C@@H](COC1CCN(c2nc3cc(O)ccc3o2)CC1)NC(=O)OC(C)(C)C to produce C[C@@H](COC1CCN(c2nc3cc(OCC4CC4)ccc3o2)CC1)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.