Using O=C1OC(=O)C([C@H]2CC[C@@H](O)CC2)=C1C1CCCC1, [OH-] to produce O=C([O-])/C(=C(\C(=O)[O-])[C@H]1CC[C@@H](O)CC1)C1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.