Using C[C@]12C=CC(=O)C=C1CC[C@@H]1[C@@H]2CC[C@]2(C)C(=C(C#N)C(=O)O)CC[C@@H]12 to produce C[C@]12CC[C@H]3[C@@H](CCC4=CC(=O)C=C[C@@]43C)[C@@H]1CC[C@@H]2C(C#N)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.