Using Oc1ccc(C2=Cc3ccc(O)c(O)c3OC2)cc1, COC1=C(c2ccccc2)COc2c1ccc(OC(C)=O)c2OC(C)=O to produce COc1ccc(C2=Cc3ccc(O)c(O)c3OC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.