Using CC(=O)Oc1cc(OC(C)=O)c2c(=O)c(-c3ccccc3)c(C)oc2c1 to produce Cc1oc2cc(O)cc(O)c2c(=O)c1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.