Using O=C1CC(c2ccccc2)(c2ccccc2)c2ccccc21, N#CCBr to produce N#CCC1C(=O)c2ccccc2C1(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.