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