Using CC1(C)O[C@@H]2O[C@@H](C(=O)c3ccc(Cl)c(Cc4ccc5c(c4)OCCO5)c3)[C@@H](O)[C@@H]2O1 to produce CC1(C)O[C@@H]2O[C@@H]([C@@H](O)c3ccc(Cl)c(Cc4ccc5c(c4)OCCO5)c3)[C@@H](O)[C@@H]2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.