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