Using CC(=O)OC[C@H]1O[C@@H](Oc2cccc(O)c2C(C)=O)[C@H](OC(C)=O)[C@@H](OC(C)=O)[C@@H]1OC(C)=O, O=Cc1ccc2occc2c1 to produce O=C(C=Cc1ccc2occc2c1)c1c(O)cccc1O[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.