Using CC(=O)O[C@H]1CC[C@@]2(C)C(=C[C@@H](Br)[C@H]3[C@@H]4CC[C@H]([C@H](C)CCCC(C)C)[C@@]4(C)CC[C@@H]32)C1 to produce CC(=O)O[C@H]1CC[C@@]2(C)C(=CC=C3[C@@H]4CC[C@H]([C@H](C)CCCC(C)C)[C@@]4(C)CC[C@@H]32)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.