Using O=C1OC(=O)c2cc(Br)ccc21, C#Cc1cccc2ccccc12 to produce O=C1OC(=O)c2cc(C#Cc3cccc4ccccc34)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.