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