Using CC(C)(C)OC(=O)OC(=O)OC(C)(C)C, COc1cc(Br)ccc1[C@@H](CO)CC#N to produce COc1cc(Br)ccc1[C@@H](CO)CCNC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.