Using OC[C@H]1O[C@](O)(c2ccc(Cl)c(Cc3ccc(O)cc3)c2)[C@H](O)[C@@H](O)[C@@H]1O, C1CC2OC2C1 to produce OC[C@H]1O[C@](O)(c2ccc(Cl)c(Cc3ccc(O[C@@H]4CCC[C@H]4O)cc3)c2)[C@H](O)[C@@H](O)[C@@H]1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.