Using CCOC(=O)c1cc(=O)c2c(OCC(O)COc3cccc(O)c3C(C)=O)cccc2o1 to produce CC(=O)c1c(O)cccc1OCC(O)COc1cccc2oc(C(=O)[O-])cc(=O)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.