Using CCCCCC(C)=CCCC(CCCCCCC(=O)OCC)C(C)=O, [OH-] to produce CCCCCC(C)(O)CCCC(CCCCCCC(=O)OCC)C(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.