Using C[C@]12CC[C@@H]3c4ccc(O)cc4CC[C@H]3[C@@H]1CCC2=O to produce C[C@@]12CCC[C@H]1[C@@H]1CCc3cc(O)ccc3[C@H]1CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.