Using CCCCOC(C)([O-])[O-], C=CC(C)(O)CCC=C(C)CCC=C(C)C to produce CCCCOC(=O)CCC=C(C)CCC=C(C)CCC=C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.