Using CN([C@H]1CC[C@H](O)CC1)S(=O)(=O)c1ccc(C(F)(F)F)cc1, CC(C)(C)OC(=O)CBr to produce CN([C@H]1CC[C@H](OCC(=O)OC(C)(C)C)CC1)S(=O)(=O)c1ccc(C(F)(F)F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.