Using COC(=O)CCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O[C@@H]2O[C@@H](C)[C@@H](OCc3ccccc3)[C@@H](OCc3ccccc3)[C@@H]2OCc2ccccc2)[C@H](O)[C@H]1NC(C)=O to produce COC(=O)CCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O[C@@H]2O[C@@H](C)[C@@H](O)[C@@H](O)[C@@H]2O)[C@H](O)[C@H]1NC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.