Using CC(=O)Oc1ccc(C2COc3cc(OC(C)=O)cc(C)c3C2=O)cc1 to produce Cc1cc(O)cc2c1C(=O)C(c1ccc(O)cc1)CO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.