Using CC(C)(C)OC(=O)N[C@@H](CC#Cc1ccc(Br)cc1)C(=O)OC1CCCC1 to produce CC(C)(C)OC(=O)N[C@@H](C/C=C\c1ccc(Br)cc1)C(=O)OC1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.