Using C=C(C)[C@@H]1CCC2=CC(=O)C[C@@H](C)[C@]2(C)C1 to produce C=C(C)[C@@H]1CCC2=C[C@@H](O)C[C@@H](C)[C@]2(C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.