Using C#CCBr, O=c1[nH]c(-c2ccccc2)c(-c2ccccc2)o1 to produce C#CCn1c(-c2ccccc2)c(-c2ccccc2)oc1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.