Using Cc1cc(O[C@H]2C[C@@H](NC(=O)OC(C)(C)C)C2)cc(C)c1Br to produce Cc1cc(O[C@H]2C[C@@H](N)C2)cc(C)c1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.