Using COc1cccc([C@@]23CCCC[C@H]2C(=O)NC(=O)C3)c1, CC(C)=CCBr to produce COc1cccc([C@@]23CCCC[C@@H]2C(=O)N(CC=C(C)C)C(=O)C3)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.