Using C[O-], COC1=CC2=CC[C@@H]3C(=CC[C@]4(C)C(=O)CC[C@@H]34)[C@@]2(C)CC1 to produce C=C1C[C@H]2[C@@H]3CC=C4C=C(OC)CC[C@]4(C)C3=CC[C@]2(C)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.