Using CC(C)(C)C(=O)OC[C@H]1O[C@H](Br)[C@H](OC(=O)C(C)(C)C)[C@@H](OC(=O)C(C)(C)C)[C@@H]1OC(=O)C(C)(C)C, Oc1ccc(CCc2ccnc3[nH]nc(O)c23)cc1 to produce CC(C)(C)C(=O)OC[C@H]1O[C@@H](Oc2n[nH]c3nccc(CCc4ccc(O)cc4)c23)[C@H](OC(=O)C(C)(C)C)[C@@H](OC(=O)C(C)(C)C)[C@@H]1OC(=O)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.