Using C#CCN(CC(NC(=O)OCc1ccccc1)C(=O)OC)C(=O)CBr to produce C#CCN1CC(C(=O)OC)N(C(=O)OCc2ccccc2)CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.