Using C[C@]12CC[C@H]3C(=CC=C4C[C@@H](O)CC[C@@]43C)[C@@H]1CC[C@@H]2O to produce C[C@]12CCC(=O)C=C1CC=C1[C@@H]2CC[C@]2(C)C(=O)CC[C@@H]12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.