Using OCC12CCC(c3cccc(Oc4ccccc4)c3)(CC1)OC2, O=C([O-])O to produce O=CC12CCC(c3cccc(Oc4ccccc4)c3)(CC1)CO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.