Using C#CCOC, CCOC(=O)c1c(Br)cc(-c2c(CC)cccc2CC)nc1C to produce CCOC(=O)c1c(C#CCOC)cc(-c2c(CC)cccc2CC)nc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.